v0.6.0

0.6.0 2024-01-12

This version tweaks Throughput samplers to permit calculating non-integer sample rates, which makes them choose better sample rates in many scenarios. It also fixes a race condition that was recently detected by an improved Go runtime.

Fixes

• fix: allow throughput samplers to have non-integer rates (#74) | Yi Zhao
• fix: race condition in WindowedThroughput sampler (#73) | Kent Quirk

Maintenance

• maint: update codeowners to pipeline-team (#72) | Jamie Danielson
• maint: update project workflow for pipeline (#71) | Jamie Danielson
• maint: update codeowners to pipeline (#70) | Jamie Danielson

v0.5.0

0.5.0 2023-06-08

This version extends the Sampler interface to include a new GetMetrics function, which returns a collection of metrics relevant to that specific sampler. This improves visibility into the sampler and will be used in an upcoming release of Honeycomb's Refinery.

This is a breaking change for code implemented so as to conform to the dynsampler.Sampler interface, such as hand-coded mocks used for testing. Code using the interface is unaffected.

Features

• feat: Add GetMetrics metrics retrieval function to Sampler interface (#65) | [Kent Quirk](https://github.com/Kent Quirk)

Maintenance

• maint(deps): bump github.com/stretchr/testify from 1.8.2 to 1.8.4 (#64) | dependabot[bot]
• maint: update dependabot.yml (#63) | [Vera Reynolds](https://github.com/Vera Reynolds)

v0.4.0

This version contains two new samplers and some (backwards-compatible) changes to the API:

• Many thanks to Yi Zhao for the contribution of the WindowedThroughput sampler. This sampler is like the Throughput sampler, but uses a moving average to accumulate sample rates across multiple sampling periods.
• The new EMAThroughput sampler adjusts overall throughput to achieve a goal while also ensuring that all values in the key space are represented.
• The GetSampleRateMulti() function allows a single request to represent multiple events. This is particularly useful when tail-sampling at the trace level (because each trace represents a number of spans).
• All samplers now support specifying a time.Duration instead of a time in seconds. Fields like ClearFrequencySec are now deprecated and will be dropped in a future release.

⚠️ As of this version, dynsampler-go requires and is tested on versions of Go 1.17 and greater.

Features

• feat: EMAThroughput sampler (#58) | Kent Quirk
• feat: Deprecate integer seconds and replace with time.Duration (#59) | Kent Quirk
• feat: add GetSampleRateMulti (#53) | Kent Quirk
• feat: Windowed Throughput Sampling (#45) | Yi Zhao
  • fix: Fix flaky blocklist test (#52) | Yi Zhao

Maintenance

• maint: Pull out common calculation into a function (#57) | Kent Quirk
• maint: bump the go versions we support (#55) | Kent Quirk
• maint(deps): bump github.com/stretchr/testify from 1.6.1 to 1.8.2 (#49) | dependabot[bot]
• maint: remove buildevents from circle (#48) | Jamie Danielson
• chore: Update workflow (#47) | Tyler Helmuth
• chore: Update CODEOWNERS (#46) | Tyler Helmuth
• chore: update dependabot.yml (#44) | Kent Quirk

v0.3.0

⚠️ As of this version, dynsampler-go is only tested on Go 1.16 or greater.

Maintenance

• maint: drop versions of go below 1.16 (#39) | @vreynolds
• maint: add go 1.18, 1.19 to CI (#30, #31) | @vreynolds
• maint: add go 1.16, 1.17 to CI (#28) | @MikeGoldsmith
• ... and a lot of project management stuff. Details can be found in the full changelog.

New Contributors

• @robbkidd made their first contribution in #17
• @bdarfler made their first contribution in #19
• @vreynolds made their first contribution in #21
• @JamieDanielson made their first contribution in #25
• @MikeGoldsmith made their first contribution in #28
• @pkanal made their first contribution in #36

Full Changelog: v0.2.1...v0.3.0