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While investigating lock contention on `MemPostings`, we saw that lots of locking is happening in `LabelValues` and `PostingsForLabelsMatching`, both copying the label values slices while holding the mutex. This adds an extra map that holds an append-only label values slice for each one of the label names. Since the slice is append-only, it can be copied without holding the mutex. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> |
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| block.go | ||
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| CHANGELOG.md | ||
| compact.go | ||
| compact_test.go | ||
| db.go | ||
| db_test.go | ||
| example_test.go | ||
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| head.go | ||
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| querier.go | ||
| querier_bench_test.go | ||
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| README.md | ||
| repair.go | ||
| repair_test.go | ||
| testutil.go | ||
| tsdbblockutil.go | ||
TSDB
This directory contains the Prometheus TSDB (Time Series DataBase) library, which handles storage and querying of all Prometheus v2 data.
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: