Metrics reference

Akka collects metrics for monitoring the runtime behavior of your services.

These metrics are available for export to external monitoring systems.

In addition to the Akka-specific metrics listed below, standard JVM runtime metrics (memory, garbage collection, threads, class loading, CPU, etc.) are also collected and exported. These follow the OpenTelemetry semantic conventions for JVM metrics — see OpenTelemetry JVM metrics for the full list and attribute definitions.

HTTP Endpoints

HTTP server active requests

Number of active HTTP server requests. Metric:: http.server.active_requests Type:: up-down counter Unit:: {request}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Endpoint attributes
Attribute Type Required Description

akka.endpoint.method

string

Yes

Name of the endpoint method being invoked.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

http.request.method

string

Yes

HTTP request method.

http.route

string

Conditionally required: If and only if it’s available

The matched route template, e.g. /pets/{id}.

server.address

string

Recommended

The client-facing server hostname.

HTTP server request body size

Size of HTTP server request bodies. Metric:: http.server.request.body.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Endpoint attributes
Attribute Type Required Description

akka.endpoint.method

string

Yes

Name of the endpoint method being invoked.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

http.request.method

string

Yes

HTTP request method.

http.route

string

Conditionally required: If and only if it’s available

The matched route template, e.g. /pets/{id}.

server.address

string

Recommended

The client-facing server hostname.

HTTP server request duration

Duration of HTTP server requests. Metric:: http.server.request.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Endpoint attributes
Attribute Type Required Description

akka.endpoint.method

string

Yes

Name of the endpoint method being invoked.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if and only if an error has occurred.

Describes the error condition, such as the HTTP status code.

http.request.method

string

Yes

HTTP request method.

http.response.status_code

int

Conditionally required: If and only if one was received/sent.

HTTP response status code.

http.route

string

Conditionally required: If and only if it’s available

The matched route template, e.g. /pets/{id}.

server.address

string

Recommended

The client-facing server hostname.

HTTP server response body size

Size of HTTP server response bodies. Metric:: http.server.response.body.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Endpoint attributes
Attribute Type Required Description

akka.endpoint.method

string

Yes

Name of the endpoint method being invoked.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if and only if an error has occurred.

Describes the error condition, such as the HTTP status code.

http.request.method

string

Yes

HTTP request method.

http.response.status_code

int

Conditionally required: If and only if one was received/sent.

HTTP response status code.

http.route

string

Conditionally required: If and only if it’s available

The matched route template, e.g. /pets/{id}.

server.address

string

Recommended

The client-facing server hostname.

gRPC Endpoints

RPC server call duration

Duration of incoming gRPC server calls. Metric:: rpc.server.call.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Endpoint attributes
Attribute Type Required Description

akka.endpoint.method

string

Yes

Name of the endpoint method being invoked.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if and only if an error has occurred.

Describes the error condition, such as the gRPC status code.

rpc.method

string

Yes

The gRPC service and method name, e.g. com.example.MyService/MyMethod.

rpc.response.status_code

string

Conditionally required: if available.

The gRPC status code.

rpc.system.name

enum

Yes

The Remote Procedure Call (RPC) system.

server.address

string

Recommended

The client-facing server hostname.

RPC server response size

Size of RPC server response messages. Metric:: rpc.server.response.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Endpoint attributes
Attribute Type Required Description

akka.endpoint.method

string

Yes

Name of the endpoint method being invoked.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if and only if an error has occurred.

Describes the error condition, such as the gRPC status code.

rpc.method

string

Yes

The gRPC service and method name, e.g. com.example.MyService/MyMethod.

rpc.response.status_code

string

Conditionally required: if available.

The gRPC status code.

rpc.system.name

enum

Yes

The Remote Procedure Call (RPC) system.

server.address

string

Recommended

The client-facing server hostname.

MCP Endpoints

MCP server operation duration

Duration of incoming MCP server operations. Metric:: mcp.server.operation.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if and only if an error has occurred.

Describes the error condition.

gen_ai.operation.name

enum

Conditionally required: when applicable for the MCP method

The name of the operation being performed.

gen_ai.prompt.name

string

Conditionally required: When operation is related to a specific prompt.

The MCP prompt name.

gen_ai.tool.name

string

Conditionally required: When operation is related to a specific tool.

The MCP tool name.

mcp.method.name

enum

Yes

The name of the request or notification method.

rpc.response.status_code

string

Conditionally required: if available.

The gRPC status code for the MCP transport.

Agents

Agent command duration

Duration of agent command handling. Metric:: akka.agent.command.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Agent content load duration

Duration of agent content loading operations. Metric:: akka.agent.content.load.duration Type:: histogram Unit:: s

Agent Content attributes
Attribute Type Required Description

akka.agent.content.kind

string

Yes

The kind of content being loaded.

akka.agent.content.loader.class

string

Recommended: if available

The class name of the content loader used.

akka.agent.content.size

int

Recommended: if available

The size of the loaded content in bytes.

akka.agent.content.uri

string

Yes

The URI of the content being loaded.
Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Agent content load size

Size of content loaded by the agent. Metric:: akka.agent.content.load.size Type:: histogram Unit:: By

Agent Content attributes
Attribute Type Required Description

akka.agent.content.kind

string

Yes

The kind of content being loaded.

akka.agent.content.loader.class

string

Recommended: if available

The class name of the content loader used.

akka.agent.content.size

int

Recommended: if available

The size of the loaded content in bytes.

akka.agent.content.uri

string

Yes

The URI of the content being loaded.
Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Agent evaluation result

Number of agent evaluation results. Metric:: akka.agent.evaluation.result Type:: counter Unit:: {result}

Agent Evaluation attributes
Attribute Type Required Description

akka.agent.evaluation.result

enum

Yes

The result of an agent evaluation.
Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Agent guardrail evaluation duration

Duration of agent guardrail evaluations. Metric:: akka.agent.guardrail.duration Type:: histogram Unit:: s

Agent Guardrail attributes
Attribute Type Required Description

akka.agent.guardrail.category

string

Yes

The category of the guardrail being evaluated.

akka.agent.guardrail.name

string

Yes

The name of the guardrail being evaluated.

akka.agent.guardrail.result

enum

Yes

The result of a guardrail evaluation.
Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

GenAI client operation duration

Duration of GenAI client operations. Metric:: gen_ai.client.operation.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

gen_ai.operation.name

enum

Yes

The name of the operation being performed.

gen_ai.provider.name

enum

Yes

The Generative AI provider as identified by the client or server instrumentation.

gen_ai.request.model

string

Conditionally required: If available.

The name of the GenAI model a request is being made to.

gen_ai.tool.name

string

Conditionally required: when gen_ai.operation.name is execute_tool

Name of the tool utilized by the agent.

GenAI client token usage

Number of input and output tokens used in GenAI operations. Metric:: gen_ai.client.token.usage Type:: histogram Unit:: {token}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

gen_ai.operation.name

enum

Yes

The name of the operation being performed.

gen_ai.provider.name

enum

Yes

The Generative AI provider as identified by the client or server instrumentation.

gen_ai.request.model

string

Conditionally required: If available.

The name of the GenAI model a request is being made to.

gen_ai.token.type

enum

Yes

The type of token being counted.

Workflows

Active workflows

Number of currently active workflow instances. Metric:: akka.workflow.active Type:: up-down counter Unit:: {workflow}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Workflow active duration

Duration that a workflow instance was active (from activation to passivation or failure). Metric:: akka.workflow.active.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow command duration

Total duration of workflow command handling (from received to completed). Metric:: akka.workflow.command.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Workflow Command attributes
Attribute Type Required Description

akka.workflow.command.name

string

Yes

The name of the workflow command.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow command processing duration

Duration of workflow command processing in the user function (excludes persist). Metric:: akka.workflow.command.processing.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Workflow Command attributes
Attribute Type Required Description

akka.workflow.command.name

string

Yes

The name of the workflow command.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow conflicts detected

Number of workflow replication conflicts detected. Metric:: akka.workflow.conflicts_detected Type:: counter Unit:: {conflict}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Workflow conflicts resolved

Number of workflow replication conflicts resolved. Metric:: akka.workflow.conflicts_resolved Type:: counter Unit:: {conflict}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Workflow loaded size

Size in bytes of loaded workflow data (events, snapshots) during recovery. Each record represents one loaded item. Metric:: akka.workflow.loaded.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Workflow Persistence attributes
Attribute Type Required Description

akka.workflow.persistence.type

enum

Yes

The type of workflow persistence operation.

Workflow persist duration

Duration of workflow persistence operations. Metric:: akka.workflow.persist.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Workflow persisted size

Size in bytes of persisted workflow data (events, snapshots, replicated events). Each record represents one persisted item. Metric:: akka.workflow.persisted.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Workflow Persistence attributes
Attribute Type Required Description

akka.workflow.persistence.type

enum

Yes

The type of workflow persistence operation.

Workflow recovery duration

Duration of workflow recovery. Metric:: akka.workflow.recovery.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow recovery events loaded

Number of workflow recoveries that loaded from events (not snapshot-only). Metric:: akka.workflow.recovery.events_loaded Type:: counter Unit:: {recovery}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Workflows registered for deletion

Number of workflows registered for deletion. Metric:: akka.workflow.registered_for_deletion Type:: counter Unit:: {workflow}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

Workflow step duration

Duration of workflow step execution. Metric:: akka.workflow.step.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Workflow Step attributes
Attribute Type Required Description

akka.workflow.step.id

int

Yes

The ID of the workflow step.

akka.workflow.step.name

string

Yes

The name of the workflow step.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow step processing duration

Duration of workflow step processing in the user function. Metric:: akka.workflow.step.processing.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Workflow Step attributes
Attribute Type Required Description

akka.workflow.step.id

int

Yes

The ID of the workflow step.

akka.workflow.step.name

string

Yes

The name of the workflow step.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow transition duration

Total duration of workflow transition handling (from started to completed). Metric:: akka.workflow.transition.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Workflow transition processing duration

Duration of workflow transition processing in the user function. Metric:: akka.workflow.transition.processing.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Views

View conflict resolution duration

Total duration of view conflict resolution. Metric:: akka.view.conflict_resolution.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

View conflict resolutions

Number of view conflict resolutions completed. Metric:: akka.view.conflict_resolutions Type:: counter Unit:: {resolution}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.

View load rows

Number of rows loaded from the view store. Metric:: akka.view.load.rows Type:: counter Unit:: {row}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.

View load size

Size in bytes per loaded view entry. Metric:: akka.view.load.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.

View query byte limit exceeded

Number of view queries that exceeded the byte limit for loading from the view store. Metric:: akka.view.query.byte_limit_exceeded Type:: counter Unit:: {error}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

View query duration

Total duration of view query execution. Metric:: akka.view.query.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

View query result rows

Number of rows returned per view query. Metric:: akka.view.query.result.rows Type:: histogram Unit:: {row}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

View query result size

Size in bytes of view query results. Metric:: akka.view.query.result.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

View query row limit exceeded

Number of view queries that exceeded the row limit for loading from the view store. Metric:: akka.view.query.row_limit_exceeded Type:: counter Unit:: {error}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

View update duration

Total duration of view update handling. Metric:: akka.view.update.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.
View Update Outcome attributes
Attribute Type Required Description

akka.view.update.outcome

enum

Yes

The outcome of the view update.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

View update load duration

Duration for loading existing entries from the view store. Metric:: akka.view.update.load.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

View update sequence gaps

Number of sequence gaps detected in view updates. Metric:: akka.view.update.sequence_gaps Type:: counter Unit:: {gap}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.

View update store duration

Duration for storing updates in the view store. Metric:: akka.view.update.store.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

View update transform duration

Duration for transforming updates in the user service. Metric:: akka.view.update.transform.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

View upsert byte limit exceeded

Number of view upsert operations that exceeded the byte size limit. Metric:: akka.view.upsert.byte_limit_exceeded Type:: counter Unit:: {error}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.

View upsert rows

Number of rows upserted to the view store. Metric:: akka.view.upsert.rows Type:: counter Unit:: {row}

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.

View upsert size

Size in bytes per upserted view entry. Metric:: akka.view.upsert.size Type:: histogram Unit:: By

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
View Update attributes
Attribute Type Required Description

akka.view.table

string

Yes

The view table name.

Consumers

Consumer message duration

Duration of consumer message processing. Metric:: akka.consumer.message.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.
Consumer attributes
Attribute Type Required Description

akka.consumer.source

enum

Yes

The type of source the consumer is consuming from.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Timers

Timer call duration

Duration of timer call executions. Metric:: akka.timer.call.duration Type:: histogram Unit:: s

OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Timer operation duration

Duration of internal timer operations (register, unregister, confirm, max_retries). Metric:: akka.timer.operation.duration Type:: histogram Unit:: s

Timer Operation attributes
Attribute Type Required Description

akka.timer.operation

enum

Yes

The type of timer operation.
OpenTelemetry semantic convention attributes
Attribute Type Required Description

error.type

string

Conditionally required: if the operation ended in an error

Describes the error condition.

Timer persisted size

Size in bytes of persisted timer data. Each record represents one persisted item. Metric:: akka.timer.persisted.size Type:: histogram Unit:: By

Registered timers

Number of currently registered timer calls per worker. Metric:: akka.timer.registered Type:: gauge Unit:: {timer}

Timer Worker attributes
Attribute Type Required Description

akka.timer.worker_id

string

Yes

Identifier of the timer worker actor (shard).

Timed Actions

Timed action message duration

Duration of timed action message processing. Metric:: akka.timed_action.message.duration Type:: histogram Unit:: s

Component attributes
Attribute Type Required Description

akka.component.description

string

Recommended: if available

User-defined description of the component.

akka.component.id

string

Yes

Unique identifier for the component instance.

akka.component.implementation.name

string

Recommended: if available

Fully qualified class name of the component implementation.

akka.component.name

string

Recommended: if available

User-defined name of the component.

akka.component.type

enum

Yes

The type of Akka component.