MustRegisterEncoding add a new chunk encoding.

NewChunk creates a new chunk.

NewDecodeContext creates a new, blank, DecodeContext.

NewForEncoding allows configuring what chunk type you want.

ParseExternalKey is used to construct a partially-populated chunk from the key in DynamoDB.

ChunkLen is the length of a chunk in bytes.

Chunk contains encoded timeseries data.

DecodeContext holds data that can be re-used between decodes of different chunks.

TODO(owen-d): rename.

Data is the interface for all chunks.

Filterer filters chunks based on the metric.

RequestChunkFilterer creates ChunkFilterer for a given request context.

Encoding defines which encoding we are using, delta, doubledelta, or varbit.