0.13.0-rc.1

• [Improvement] Redesign error handling and logging. Logging should be now less noisy and all error messages should contain better reasoning about error cause
• [Improvement] Move some of the logging messages to Debug level - that should make logs less noisy and still preserve ability to see detailed errors on Debug level
• [Improvement] Add a config parameter to disable tldCache (useful for clickhouse-based backends)
• [Improvement] Implement noNullPoints query parameter. Works only with JSON as in graphite-web
• [Improvement] For all SeriesLists functions, allow to specify default argument (thx to kolobaev@)
• [Improvement] Add support for round function (thx to kolobaev@)
• [Improvement] Add integralByInterval function (thx to faceair@)
• [Improvement] Add sortBy function (thx to misiek08@)
• [Improvement] Add smartSummarize function (thx to misiek08@)
• [Fix] /render and /metrics/find URLs now works correctly for format=carbonapi_v2_pb (protov3) and for new format (carbonapi as a carbonapi's backend)
• [Fix] Allow '%' in metric names
• [Fix] zipper metrics now exported again
• [Fix] applyByNode - fix various incompatibilities with graphite-web (node starts with 1, some rewrite related issues, etc) (thx to faceair@)
• [Fix] Honor SendGlobAsIs and AlwaysSendGlobAsIs (important for pre-0.12 configs)
• [Fix] Fix panic in some cases when one of the metrics is missing
• [Fix] Compatbility fixes to useAboveSeries (now it's behavior matches graphite-web's)
• [Fix] Fix seriesList functions in case of unsorted responses (*seriesList sorts denomniators and numerators first of all)
• [Fix] Fix pprof endpoint routing (thx to faceair@)
• [Fix] Various fixes around error handling (thx to faceair@)
• [Fix] Avoid multiple requests for time moving based functions (thx to faceair@)
• [Code] Make linters much more happier about the code (thx to faceair@ for contribution)
• [Breaking] [Code] Comment out support for gRPC backend type. It was never properly tested and likely need complete rework before it will be usable
• [Breaking] [Build] Minimum Supported golang version is 1.13.0

0.12.6

• [Fix] Fix aliasByTags to work correclty with other functions
• [Fix] panic when using protov2 and backend that doesn't support tags (thx to @gekmihesg)

0.12.5

0.12.5

• [Feature] Implement 'highest' function
• [Feature] Implement 'lowest' function
• [Feature] Implement 'aggregateLine' function
• [Feature] Implement 'filterSeries' function

0.12.4

• [Feature] Fuction Defines - allows to do custom metric aliases (thx to @lomik). See doc/configuration.md for config format
• [Improvement] New config options that allows to prefix all URLs and to enable /debug/vars on a separate address:port. See docs/configuration.md for more information
• [Improvement] /render queries now returns tags in json (as graphite-web do)
• [Improvement] groupByTags should now support all available aggregation functions (#410)
• [Fix] Fix panic when using carbonapi_proto_v3 and doing tag-related queries (#407)
• [Fix] Add missing alias for averageSeries (thx to @msaf1980)

0.12.3

• [Fix] Fix graphiteWeb proxy function (thx. to @sylvain-beugin)
• [Fix] Prometheus Backend: correctly handle groups, fixes #405
• [Fix] Prometheus Backend: convert target that doesn't contain seriesByTags in a same way that's used for /metrics/find
• [Fix] change behavior of aliasSub to match graphite-web (fixes #290)
• [Improvement] Prometheus backend: Allow to specify "start" parameter (via backendOptions)

0.12.0

• [Improvement] Add support for Prometheus as Backend. This allows to use Prometheus-compatible software as carbonapi's backends (e.x. Prometheus and VictoriaMetrics)
• [Improvement] Add support for querying msgpack-compatible backends. This should make carbonapi compatible with graphite-web 1.1 and grafana/metrictank
• [Breaking][Improvement] Integrate carbonzipper 1.0.0. This introduces better loadbalancing support, but significantly changes config file format. It might behave differently with the same settings. It also removes carbonzipper dependency.
• [Improvement] seriesByTag Support (thx. to Vladimir Kolobaev)
• [Improvement] aliasByTag Support (thx. to Vladimir Kolobaev)
• [Improvmenet] groupByTags Support
• [Improvement] Added support for more aggregation functions (thx. to Oleg Matrokhin)
• [Improvement] Add 'aggregate' function.
• [Improvement] pixelRatio for png render (thx. to Roman Lomonosov)
• [Fix] Supported functions were updated to be more compatible with graphtie-web 1.1.0+
• [Fix] fix movingXyz error on intervals greater than 30 days (thx. to Safronov Michail)
• [Fix] Fix timeShift function (thx. to Gunnar Þór Magnússon)
• [Breaking][Code] Migrate all internal structures to github.com/go-graphite/protocol/carbonapi_v3_pb. This removes redundant IsAbsent slice and changes all timestamps to int64 (they are still expected to have uint32 timestamps there)