Performance exit conditions

Candidate exit conditions for the Performance type. See the catalog overview for how to adopt these.

Response latency

Exit condition What it checks

Exit condition	What it checks
`PERF-P50-LATENCY`	Median (p50) response time for the endpoint stays at or below the target budget under nominal load.
`PERF-P95-LATENCY`	The 95th-percentile response time stays at or below its target budget under nominal load.
`PERF-P99-LATENCY`	The 99th-percentile response time stays at or below its target budget under nominal load.
`PERF-TAIL-LATENCY-BUDGET`	Extreme tail latency (p99.9) stays within a defined ceiling so worst-case requests remain bounded.
`PERF-MAX-LATENCY-CEILING`	No individual request exceeds a hard maximum latency ceiling during the measured window.
`PERF-LATENCY-UNDER-LOAD`	Percentile latency targets still hold when the system is driven at its rated concurrency, not just at idle.
`PERF-COLD-START-LATENCY`	First-request (cold-start) latency after a deploy or scale-out stays within an allowed budget.
`PERF-TIME-TO-FIRST-BYTE`	Server time-to-first-byte for the endpoint stays under the target threshold.
`PERF-LATENCY-REGRESSION`	Measured latency does not regress beyond an allowed delta versus the recorded baseline.

PERF-P50-LATENCY

Median (p50) response time for the endpoint stays at or below the target budget under nominal load.

PERF-P95-LATENCY

The 95th-percentile response time stays at or below its target budget under nominal load.

PERF-P99-LATENCY

The 99th-percentile response time stays at or below its target budget under nominal load.

PERF-TAIL-LATENCY-BUDGET

Extreme tail latency (p99.9) stays within a defined ceiling so worst-case requests remain bounded.

PERF-MAX-LATENCY-CEILING

No individual request exceeds a hard maximum latency ceiling during the measured window.

PERF-LATENCY-UNDER-LOAD

Percentile latency targets still hold when the system is driven at its rated concurrency, not just at idle.

PERF-COLD-START-LATENCY

First-request (cold-start) latency after a deploy or scale-out stays within an allowed budget.

PERF-TIME-TO-FIRST-BYTE

Server time-to-first-byte for the endpoint stays under the target threshold.

PERF-LATENCY-REGRESSION

Measured latency does not regress beyond an allowed delta versus the recorded baseline.

Throughput and capacity

Exit condition What it checks

Exit condition	What it checks
`PERF-SUSTAINED-RPS`	The service sustains the target requests-per-second without error-rate or latency breach over a sustained window.
`PERF-PEAK-RPS`	The service absorbs the specified peak requests-per-second burst without failing requests.
`PERF-THROUGHPUT-PER-CORE`	Throughput normalized per CPU core meets the efficiency target for the workload.
`PERF-SATURATION-POINT`	The measured saturation (knee) point occurs at or above the required load level.
`PERF-GOODPUT-RATIO`	The ratio of successfully completed requests to total offered load stays above the target under load.
`PERF-WRITE-THROUGHPUT`	Sustained write operations per second meet the target for the persistence path.
`PERF-READ-THROUGHPUT`	Sustained read operations per second meet the target for the query path.
`PERF-BATCH-THROUGHPUT`	Batch or bulk jobs process records at or above the required rate per unit time.
`PERF-QUEUE-DRAIN-RATE`	A backlog of queued work drains at a rate that keeps end-to-end lag within the target.

PERF-SUSTAINED-RPS

The service sustains the target requests-per-second without error-rate or latency breach over a sustained window.

PERF-PEAK-RPS

The service absorbs the specified peak requests-per-second burst without failing requests.

PERF-THROUGHPUT-PER-CORE

Throughput normalized per CPU core meets the efficiency target for the workload.

PERF-SATURATION-POINT

The measured saturation (knee) point occurs at or above the required load level.

PERF-GOODPUT-RATIO

The ratio of successfully completed requests to total offered load stays above the target under load.

PERF-WRITE-THROUGHPUT

Sustained write operations per second meet the target for the persistence path.

PERF-READ-THROUGHPUT

Sustained read operations per second meet the target for the query path.

PERF-BATCH-THROUGHPUT

Batch or bulk jobs process records at or above the required rate per unit time.

PERF-QUEUE-DRAIN-RATE

A backlog of queued work drains at a rate that keeps end-to-end lag within the target.

Resource utilization

Exit condition What it checks

Exit condition	What it checks
`PERF-CPU-BUDGET`	Steady-state CPU utilization stays within the allocated budget at the rated load.
`PERF-MEMORY-CEILING`	Resident memory stays below the configured ceiling under sustained load.
`PERF-MEMORY-LEAK-FREE`	Memory usage returns to baseline after load and shows no upward drift across a soak run.
`PERF-GC-PAUSE-BUDGET`	Maximum garbage-collection pause time stays within the allowed budget.
`PERF-GC-OVERHEAD-RATIO`	The fraction of wall-clock time spent in garbage collection stays below the target ratio.
`PERF-HEAP-HEADROOM`	Peak heap usage leaves the required headroom below the maximum heap size under load.
`PERF-FILE-DESCRIPTOR-BUDGET`	Open file-descriptor and socket counts stay within the configured limit under load.
`PERF-THREAD-POOL-UTILIZATION`	Thread-pool saturation stays below the threshold that would cause queuing or starvation.
`PERF-DISK-IO-BUDGET`	Disk read/write IOPS and bandwidth stay within the provisioned budget under load.

PERF-CPU-BUDGET

Steady-state CPU utilization stays within the allocated budget at the rated load.

PERF-MEMORY-CEILING

Resident memory stays below the configured ceiling under sustained load.

PERF-MEMORY-LEAK-FREE

Memory usage returns to baseline after load and shows no upward drift across a soak run.

PERF-GC-PAUSE-BUDGET

Maximum garbage-collection pause time stays within the allowed budget.

PERF-GC-OVERHEAD-RATIO

The fraction of wall-clock time spent in garbage collection stays below the target ratio.

PERF-HEAP-HEADROOM

Peak heap usage leaves the required headroom below the maximum heap size under load.

PERF-FILE-DESCRIPTOR-BUDGET

Open file-descriptor and socket counts stay within the configured limit under load.

PERF-THREAD-POOL-UTILIZATION

Thread-pool saturation stays below the threshold that would cause queuing or starvation.

PERF-DISK-IO-BUDGET

Disk read/write IOPS and bandwidth stay within the provisioned budget under load.

Scalability and autoscaling

Exit condition What it checks

Exit condition	What it checks
`PERF-HORIZONTAL-SCALE-LINEARITY`	Throughput scales near-linearly as replicas are added, within the target efficiency factor.
`PERF-SCALE-OUT-LATENCY`	Time from a scaling trigger to new capacity serving traffic stays within the target.
`PERF-SCALE-IN-STABILITY`	Scaling in does not drop in-flight requests or breach latency targets during downscale.
`PERF-AUTOSCALE-TRIGGER`	Autoscaling fires at the configured utilization threshold before saturation is reached.
`PERF-MAX-REPLICA-CAPACITY`	The system meets required total capacity at the maximum configured replica count.
`PERF-SCALE-EFFICIENCY`	Added capacity yields the expected marginal throughput gain rather than diminishing returns.
`PERF-NO-SCALE-OSCILLATION`	Autoscaler does not thrash (rapid scale up/down cycles) under a steady load pattern.
`PERF-COLD-CAPACITY-RESERVE`	Reserve capacity is sufficient to absorb a spike while new replicas are still starting.

PERF-HORIZONTAL-SCALE-LINEARITY

Throughput scales near-linearly as replicas are added, within the target efficiency factor.

PERF-SCALE-OUT-LATENCY

Time from a scaling trigger to new capacity serving traffic stays within the target.

PERF-SCALE-IN-STABILITY

Scaling in does not drop in-flight requests or breach latency targets during downscale.

PERF-AUTOSCALE-TRIGGER

Autoscaling fires at the configured utilization threshold before saturation is reached.

PERF-MAX-REPLICA-CAPACITY

The system meets required total capacity at the maximum configured replica count.

PERF-SCALE-EFFICIENCY

Added capacity yields the expected marginal throughput gain rather than diminishing returns.

PERF-NO-SCALE-OSCILLATION

Autoscaler does not thrash (rapid scale up/down cycles) under a steady load pattern.

PERF-COLD-CAPACITY-RESERVE

Reserve capacity is sufficient to absorb a spike while new replicas are still starting.

Data access and caching efficiency

Exit condition What it checks

Exit condition	What it checks
`PERF-NO-N-PLUS-ONE`	A request path issues no N+1 query pattern, verified by query-count assertions per operation.
`PERF-QUERY-LATENCY-BUDGET`	Individual database query latency stays within its target budget under load.
`PERF-INDEX-COVERAGE`	Hot query paths are served by an index and do not fall back to full scans.
`PERF-CONNECTION-POOL-SIZING`	The connection pool is sized to sustain target concurrency without excess idle connections.
`PERF-CONNECTION-POOL-EXHAUSTION`	Connection-pool wait time and exhaustion events stay within limits under peak load.
`PERF-SLOW-QUERY-THRESHOLD`	No query exceeds the slow-query threshold during the measured load window.
`PERF-DB-ROUNDTRIP-COUNT`	The number of database round-trips per request stays at or below the target.
`PERF-CACHE-HIT-RATE`	Cache hit rate for the cached surface meets or exceeds the target percentage under representative load.
`PERF-CACHE-STAMPEDE-GUARD`	Concurrent misses for a hot key do not trigger a stampede of duplicate backend work.
`PERF-PAGINATION-ENFORCED`	List and query endpoints enforce pagination or result caps rather than returning unbounded sets.
`PERF-RESPONSE-PAYLOAD-SIZE`	Response payload size stays within the target byte budget for the endpoint.

PERF-NO-N-PLUS-ONE

A request path issues no N+1 query pattern, verified by query-count assertions per operation.

PERF-QUERY-LATENCY-BUDGET

Individual database query latency stays within its target budget under load.

PERF-INDEX-COVERAGE

Hot query paths are served by an index and do not fall back to full scans.

PERF-CONNECTION-POOL-SIZING

The connection pool is sized to sustain target concurrency without excess idle connections.

PERF-CONNECTION-POOL-EXHAUSTION

Connection-pool wait time and exhaustion events stay within limits under peak load.

PERF-SLOW-QUERY-THRESHOLD

No query exceeds the slow-query threshold during the measured load window.

PERF-DB-ROUNDTRIP-COUNT

The number of database round-trips per request stays at or below the target.

PERF-CACHE-HIT-RATE

Cache hit rate for the cached surface meets or exceeds the target percentage under representative load.

PERF-CACHE-STAMPEDE-GUARD

Concurrent misses for a hot key do not trigger a stampede of duplicate backend work.

PERF-PAGINATION-ENFORCED

List and query endpoints enforce pagination or result caps rather than returning unbounded sets.

PERF-RESPONSE-PAYLOAD-SIZE

Response payload size stays within the target byte budget for the endpoint.

Concurrency and backpressure

Exit condition What it checks

Exit condition	What it checks
`PERF-CONCURRENCY-LIMIT`	The service enforces a bounded in-flight concurrency limit rather than accepting unlimited work.
`PERF-BACKPRESSURE-APPLIED`	Under overload the system applies backpressure to upstream producers instead of buffering unboundedly.
`PERF-QUEUE-DEPTH-CEILING`	Internal queue depth stays below its configured ceiling under sustained load.
`PERF-NO-UNBOUNDED-BUFFER`	No stage in the request or stream path uses an unbounded in-memory buffer.
`PERF-BULKHEAD-ISOLATION`	Resource pools are bulkheaded so saturation of one dependency does not starve unrelated paths.
`PERF-RATE-LIMIT-ENFORCED`	Per-client or per-endpoint rate limits are enforced at the configured threshold.
`PERF-LOAD-SHEDDING`	Beyond capacity the system sheds load with fast rejections rather than degrading all requests.
`PERF-TIMEOUT-BUDGET`	Outbound calls enforce timeouts within budget so slow dependencies cannot pile up in-flight work.
`PERF-THREAD-STARVATION-FREE`	Blocking work is isolated so it does not starve the shared execution or event-loop threads.

PERF-CONCURRENCY-LIMIT

The service enforces a bounded in-flight concurrency limit rather than accepting unlimited work.

PERF-BACKPRESSURE-APPLIED

Under overload the system applies backpressure to upstream producers instead of buffering unboundedly.

PERF-QUEUE-DEPTH-CEILING

Internal queue depth stays below its configured ceiling under sustained load.

PERF-NO-UNBOUNDED-BUFFER

No stage in the request or stream path uses an unbounded in-memory buffer.

PERF-BULKHEAD-ISOLATION

Resource pools are bulkheaded so saturation of one dependency does not starve unrelated paths.

PERF-RATE-LIMIT-ENFORCED

Per-client or per-endpoint rate limits are enforced at the configured threshold.

PERF-LOAD-SHEDDING

Beyond capacity the system sheds load with fast rejections rather than degrading all requests.

PERF-TIMEOUT-BUDGET

Outbound calls enforce timeouts within budget so slow dependencies cannot pile up in-flight work.

PERF-THREAD-STARVATION-FREE

Blocking work is isolated so it does not starve the shared execution or event-loop threads.

Akka runtime performance

Exit condition What it checks

Exit condition	What it checks
`PERF-ENTITY-THROUGHPUT`	A single entity sustains the target command throughput without breaching its latency budget.
`PERF-ENTITY-COMMAND-LATENCY`	Entity command round-trip latency stays within its percentile budget under load.
`PERF-SHARD-SCALE-OUT`	Aggregate entity throughput scales as shards are distributed across added nodes.
`PERF-SHARD-REBALANCE-IMPACT`	Shard rebalancing during scale events keeps latency impact within the allowed transient budget.
`PERF-VIEW-QUERY-LATENCY`	View query latency meets its percentile target under representative query load.
`PERF-VIEW-UPDATE-LAG`	View projection lag behind source events stays within the target eventual-consistency window.
`PERF-STREAM-PROCESSING-RATE`	A stream or consumer processes events at or above the required sustained rate.
`PERF-CONSUMER-LAG-BUDGET`	Consumer offset lag stays within the target bound under peak inbound event rate.
`PERF-PASSIVATION-EFFICIENCY`	Entity passivation keeps the active in-memory set and memory footprint within budget under a large key space.

PERF-ENTITY-THROUGHPUT

A single entity sustains the target command throughput without breaching its latency budget.

PERF-ENTITY-COMMAND-LATENCY

Entity command round-trip latency stays within its percentile budget under load.

PERF-SHARD-SCALE-OUT

Aggregate entity throughput scales as shards are distributed across added nodes.

PERF-SHARD-REBALANCE-IMPACT

Shard rebalancing during scale events keeps latency impact within the allowed transient budget.

PERF-VIEW-QUERY-LATENCY

View query latency meets its percentile target under representative query load.

PERF-VIEW-UPDATE-LAG

View projection lag behind source events stays within the target eventual-consistency window.

PERF-STREAM-PROCESSING-RATE

A stream or consumer processes events at or above the required sustained rate.

PERF-CONSUMER-LAG-BUDGET

Consumer offset lag stays within the target bound under peak inbound event rate.

PERF-PASSIVATION-EFFICIENCY

Entity passivation keeps the active in-memory set and memory footprint within budget under a large key space.

Load, soak, and stress testing

Exit condition What it checks

Exit condition	What it checks
`PERF-LOAD-TEST-PASS`	A load test at target load passes all latency, throughput, and error-rate thresholds.
`PERF-SOAK-STABILITY`	An extended soak run holds latency, throughput, and resource metrics stable without drift.
`PERF-STRESS-BREAKPOINT`	Under a ramping stress test the breaking point occurs at or above the required load level.
`PERF-SPIKE-RECOVERY`	After a traffic spike the system returns to baseline latency within the target recovery time.
`PERF-DEGRADATION-GRACEFUL`	Beyond capacity the system degrades gracefully rather than collapsing or cascading failures.
`PERF-BASELINE-REGRESSION-GATE`	A performance regression test gates the build when key metrics regress past the allowed delta.
`PERF-CAPACITY-HEADROOM`	Measured capacity leaves the required headroom above expected peak production load.
`PERF-ENDURANCE-NO-DRIFT`	Over an endurance run there is no monotonic drift in latency, memory, or connection counts.

PERF-LOAD-TEST-PASS

A load test at target load passes all latency, throughput, and error-rate thresholds.

PERF-SOAK-STABILITY

An extended soak run holds latency, throughput, and resource metrics stable without drift.

PERF-STRESS-BREAKPOINT

Under a ramping stress test the breaking point occurs at or above the required load level.

PERF-SPIKE-RECOVERY

After a traffic spike the system returns to baseline latency within the target recovery time.

PERF-DEGRADATION-GRACEFUL

Beyond capacity the system degrades gracefully rather than collapsing or cascading failures.

PERF-BASELINE-REGRESSION-GATE

A performance regression test gates the build when key metrics regress past the allowed delta.

PERF-CAPACITY-HEADROOM

Measured capacity leaves the required headroom above expected peak production load.

PERF-ENDURANCE-NO-DRIFT

Over an endurance run there is no monotonic drift in latency, memory, or connection counts.

Frontend performance

Exit condition What it checks

Exit condition	What it checks
`PERF-LCP-BUDGET`	UI-only: Largest Contentful Paint stays within the Core Web Vitals target for the page.
`PERF-INP-BUDGET`	UI-only: Interaction to Next Paint stays within the responsiveness target for key interactions.
`PERF-CLS-BUDGET`	UI-only: Cumulative Layout Shift stays below the visual-stability target for the page.
`PERF-FCP-BUDGET`	UI-only: First Contentful Paint occurs within the target time on the reference network profile.
`PERF-TTI-BUDGET`	UI-only: Time to Interactive stays within the target so the page becomes usable promptly.
`PERF-JS-BUNDLE-SIZE`	UI-only: The shipped JavaScript bundle size stays within the byte budget after compression.
`PERF-MAIN-THREAD-BLOCKING`	UI-only: Total main-thread blocking time stays below the target to avoid input jank.
`PERF-IMAGE-WEIGHT-BUDGET`	UI-only: Total image and media weight for the page stays within the transfer budget.

PERF-LCP-BUDGET

UI-only: Largest Contentful Paint stays within the Core Web Vitals target for the page.

PERF-INP-BUDGET

UI-only: Interaction to Next Paint stays within the responsiveness target for key interactions.

PERF-CLS-BUDGET

UI-only: Cumulative Layout Shift stays below the visual-stability target for the page.

PERF-FCP-BUDGET

UI-only: First Contentful Paint occurs within the target time on the reference network profile.

PERF-TTI-BUDGET

UI-only: Time to Interactive stays within the target so the page becomes usable promptly.

PERF-JS-BUNDLE-SIZE

UI-only: The shipped JavaScript bundle size stays within the byte budget after compression.

PERF-MAIN-THREAD-BLOCKING

UI-only: Total main-thread blocking time stays below the target to avoid input jank.

PERF-IMAGE-WEIGHT-BUDGET

UI-only: Total image and media weight for the page stays within the transfer budget.