feat: deterministic sampling rate

[mormubis]

adlrb/async-session-manager

[cit-pr-commenter]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	168.27 KiB	168.09 KiB	-181 B	-0.11%	✅
Rum Profiler	4.32 KiB	4.33 KiB	+1 B	+0.02%	✅
Rum Recorder	24.54 KiB	24.54 KiB	+1 B	+0.00%	✅
Logs	56.48 KiB	56.72 KiB	+243 B	+0.42%	✅
Flagging	944 B	944 B	0 B	0.00%	✅
Rum Slim	125.16 KiB	125.01 KiB	-154 B	-0.12%	✅
Worker	23.63 KiB	23.63 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base CPU Time (ms)	Local CPU Time (ms)	𝚫%
RUM - add global context	0.0049	0.0041	-16.33%
RUM - add action	0.0175	0.0132	-24.57%
RUM - add error	0.0146	0.0156	+6.85%
RUM - add timing	0.0031	0.0029	-6.45%
RUM - start view	0.0033	0.003	-9.09%
RUM - start/stop session replay recording	0.0007	0.0006	-14.29%
Logs - log message	0.0172	0.0142	-17.44%

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
RUM - add global context	27.35 KiB	27.81 KiB	+466 B
RUM - add action	52.82 KiB	51.25 KiB	-1.56 KiB
RUM - add timing	27.25 KiB	26.93 KiB	-329 B
RUM - add error	58.87 KiB	57.14 KiB	-1.73 KiB
RUM - start/stop session replay recording	27.58 KiB	26.67 KiB	-924 B
RUM - start view	426.63 KiB	433.68 KiB	+7.05 KiB
Logs - log message	48.34 KiB	47.07 KiB	-1.27 KiB

🔗 RealWorld

[datadog-datadog-prod-us1]

⚠️ Tests

✨ Fix all issues with Cursor

⚠️ Warnings

🧪 30 Tests failed

isSampled deterministic sampling a session id with a high hash value should not be sampled even if the rate is close to 100% from Chrome 63.0.3239.84 (Windows 10) (Datadog) (Fix with Cursor)

ReferenceError: BigInt is not defined
    at isSampled (webpack:///packages/core/src/domain/sampler.ts:19:20 <- /tmp/_karma_webpack_823855/commons.js:53874:22)
    at UserContext.it (webpack:///packages/core/src/domain/sampler.spec.ts:41:23 <- /tmp/_karma_webpack_823855/commons.js:53801:71)
    at <Jasmine>

isSampled deterministic sampling a session id with a low hash value should be sampled with a rate close to 0% from Chrome 63.0.3239.84 (Windows 10) (Datadog) (Fix with Cursor)

ReferenceError: BigInt is not defined
    at isSampled (webpack:///packages/core/src/domain/sampler.ts:19:20 <- /tmp/_karma_webpack_823855/commons.js:53874:22)
    at UserContext.it (webpack:///packages/core/src/domain/sampler.spec.ts:27:23 <- /tmp/_karma_webpack_823855/commons.js:53788:71)
    at <Jasmine>

isSampled without bigint support sampling decision should be cached from Chrome 63.0.3239.84 (Windows 10) (Datadog) (Fix with Cursor)

ReferenceError: BigInt is not defined
    at isSampled (webpack:///packages/core/src/domain/sampler.ts:19:20 <- /tmp/_karma_webpack_823855/commons.js:53874:22)
    at UserContext.it (webpack:///packages/rum-core/src/domain/sampler/sampler.spec.ts:72:23 <- /tmp/_karma_webpack_823855/commons.js:89838:71)
    at <Jasmine>

View all

ℹ️ Info

❄️ No new flaky tests detected

🎯 Code Coverage
• Patch Coverage: 76.36%
• Overall Coverage: 77.28% (+0.02%)

View detailed report

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