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* Add a test with variable samples rate append This test overflows the chunk created in memseries, and the total amount of samples in the (only) mmapped chunk is 29, instead of the 65565 appended ones. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Cut new chunk when rate prediction was wrong When appending samples at a slow rate, and then appending at a higher rate, the prediction we made to cut a new chunk is no longer valid. Sometimes this can even cause an overflow in the chunk, if more samples than uint16 can hold are appended. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Improve comment on 2*samplesPerChunk Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Assert that all chunks have less than 240 samples Also, trigger new chunk at 240, not at more than 240 Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
TSDB
This directory contains the Prometheus TSDB (Time Series DataBase) library, which handles storage and querying of all Prometheus v2 data.
Due to an issue with versioning, the "latest" docs shown on Godoc are outdated. Instead you may use the docs for v2.31.1
Documentation
External resources
- A writeup of the original design can be found here.
- Video: Storing 16 Bytes at Scale from PromCon 2017.
- Compression is based on the Gorilla TSDB white paper.
A series of blog posts explaining different components of TSDB: