iskorotkov/avro v2.35.0 on GitHub

Release notes — v2.35.0

Go 1.27 support; minimum Go raised to 1.26 — consumers on Go 1.24/1.25 must stay on v2.34.x.
Shared Config no longer mixes up same-named types — two schemas defining the same named type differently could share an encoder, silently writing decimals at the wrong scale or swapping enum symbols and record fields.
No more stack overflow on recursive schemas — building a skip decoder for a self-referential record crashed at codec construction.
avrogen -fieldtype — override the generated Go type of a single field without editing the schema.
json-iterator removed — replaced by stdlib encoding/json; the upstream repo was archived in December 2025.

feat(avrogen): add field type overrides (#46) — new -fieldtype record.field,goType[,import] flag (repeatable) and gen.WithFieldType / gen.Config.FieldTypes. Union fields get the type exactly as written, so nullable fields need an explicit *. Unused or duplicate overrides are errors (CLI exit code 5; library: Generator.ValidateFieldTypes()). -logicaltype now shares the parser, so commas inside generic type brackets ([...]) are no longer treated as separators.
feat: support go 1.27 and raise minimum go version to 1.26 (#48) — adds go fix modernizers and slices/maps rewrites. Each rewrite was benchmark-gated, and one that caused an allocation regression was reverted.

fix(codec): key codec caches on referenced named type definitions (#54, fixes #52) — CacheFingerprint() now also hashes the definitions of externally referenced named types, and the encoder cache uses it like the decoder caches already did. Fingerprint() is unchanged, so single-object encoding, registries and compatibility checks are not affected. CacheFingerprint() values change for schemas that reference external named types; they are documented as a cache identity only.
fix: add cycle detection to skip decoder for recursive schemas (#51, thanks @snakeice) — decoding into a struct that omits a recursive field (e.g. map of the enclosing record) no longer recurses infinitely at codec construction.

perf: prebuild union skip decoders at codec construction (#53) — per-branch skip decoders are built once instead of on every value. Compared with v2.34.0: skipping ["null", Record] goes from 103 to 67 ns with 0 allocs (was 3), and a recursive 10-level union list goes from 416 to 147 ns with 0 allocs (was 30).

refactor: replace json-iterator with stdlib encoding/json (#40) — removes json-iterator/go and modern-go/concurrent. Schema output is byte-identical, so canonical forms and fingerprints are unchanged.
Dependency upgrades: klauspost/compress v1.19.2, mapstructure v2.5.0, testify v1.12.0, and later Go-1.26-compatible tooling (#39, #48). GitHub Actions bumps (#35, #49).