v0.2.1

[0.2.1] - 2026-09-17

Highlights

• Decoupled Logger Sampler (logger/sampler.go): Eliminated architectural layering breach by removing dependency on ratelimit. Defined standalone Sampler interface and an internal lock-synchronized token-bucket sampler with zero third-party dependencies.
• Bounded HTTP Client Retry Buffering (httpclient/roundtripper.go): Bounded memory ingestion on retries with DefaultMaxRetryBodySize (10MB) via io.LimitReader. Oversized streaming request bodies bypass buffering and execute as a single attempt without rewind to prevent process OOM.
• Interface Segregation on db.DBTX (db/context.go): Segregated core querier interface DBTX (Exec, Query, QueryRow) from bulk copy operations, introducing CopyDBTX for CopyFrom.
• Raw Error Transparency (httputil/response.go): Preserved transparent err.Error() propagation in ErrorFromDomain without unrequested sanitization.

Added

• logger: Decoupled Sampler interface and WithSampler functional option for custom log sampling algorithms.
• httpclient: DefaultMaxRetryBodySize constant defining 10MB memory threshold for retry body buffering.
• db: CopyDBTX interface extending DBTX with CopyFrom bulk ingestion.

Changed

• logger: Decoupled SamplingHandler from ratelimit; instantiates an internal token-bucket sampler when no custom sampler is supplied.
• httpclient: Bounded retry buffering using io.LimitReader; streams exceeding DefaultMaxRetryBodySize are executed as a single attempt without replay buffering.
• db: Streamlined DBTX interface to Exec, Query, and QueryRow; batch CopyFrom moved to segregated CopyDBTX interface.

Fixed

• Source Formatting: Applied canonical gofmt to circuitbreaker/consecutive_test.go and httpclient/roundtripper_test.go.
• httputil: Verified raw error transparency in ErrorFromDomain returning err.Error() verbatim.