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agent	fix(wal): ignore invalid native histogram schemas on load	2025-09-24 11:41:25 +02:00
chunkenc	[NHCB] Separate CustomBucketBoundsMatch from floatBucketsMatch	2025-10-05 22:38:07 +03:00
chunks	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
docs	docs: Fix chunk format documentation for `varint` encoding	2025-08-15 10:56:21 +02:00
encoding	Attempt for record type	2024-12-05 09:21:47 -08:00
errors	tsdb/errors.MultiError: support errors.As (#16544 )	2025-05-06 13:45:16 +00:00
fileutil	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
goversion	remove obsolete build tag	2024-01-17 22:26:32 +08:00
index	Fix minor issues after applying analyzer "modernize"	2025-08-27 15:44:11 +02:00
record	fix: Fix slicelabels corruption when used with proto decoding (#17150 )	2025-10-07 12:06:48 +01:00
testdata	tsdb: Delete blocks atomically; Remove tmp blocks on start; Added test. (#7772 )	2020-08-11 06:56:08 +01:00
tombstones	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
tsdbutil	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
wlog	fix(wal): ignore invalid native histogram schemas on load	2025-09-24 11:41:25 +02:00
.gitignore	Moving tsdb into its own subdirectory	2019-08-13 13:58:49 +05:30
CHANGELOG.md	Rename default branch to main	2021-02-22 20:28:02 +01:00
README.md	Fixed broken link in tsdb README.md	2022-10-07 16:20:20 +00:00
block.go	add NumFloatSamples to TSDB block stats	2025-07-07 13:48:18 -07:00
block_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
blockwriter.go	Upgrade to github.com/oklog/ulid/v2 (#16168 )	2025-03-05 16:03:25 +01:00
blockwriter_test.go	chore: enable gci linter (#16245 )	2025-03-22 15:46:13 +00:00
compact.go	Merge pull request #17074 from prymitive/logs	2025-09-02 12:55:12 +01:00
compact_test.go	tsdb: Disable more tests on MS Windows	2025-10-07 16:34:59 +02:00
db.go	Log when GC / block write starts	2025-08-26 10:30:22 +01:00
db_test.go	fix(wal): ignore invalid native histogram schemas on load	2025-09-24 11:41:25 +02:00
example_test.go	Add context argument to Querier.Select (#12660 )	2023-09-12 12:37:38 +02:00
exemplar.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
exemplar_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
head.go	perf(tsdb): reuse map of sample types to speed up head appender	2025-10-07 08:31:20 +02:00
head_append.go	tsdb: Do not track stFloat in typesInBatch explicitly	2025-10-07 15:01:22 +02:00
head_bench_test.go	Create memSeries with pendingCommit=true	2025-03-27 11:11:57 +01:00
head_dedupelabels.go	chore!: adopt log/slog, remove go-kit/log	2024-10-07 15:58:50 -04:00
head_other.go	chore: enable unused-receiver rule from revive	2025-08-04 09:43:33 +00:00
head_read.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
head_read_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
head_test.go	tsdb: Fix appended sample count metrics when converting float staleness markers to histograms (#17241 )	2025-09-30 16:49:54 +00:00
head_wal.go	fix(wal): ignore invalid native histogram schemas on load	2025-09-24 11:41:25 +02:00
isolation.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
isolation_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
mocks_test.go	chore: enable unused-receiver rule from revive	2025-08-04 09:43:33 +00:00
ooo_head.go	Add util/compression package to consolidate snappy/zstd use in Prometheus. (#16156 )	2025-03-10 10:36:26 +00:00
ooo_head_read.go	chore: enable unused-receiver rule from revive	2025-08-04 09:43:33 +00:00
ooo_head_read_test.go	[PERF] TSDB: Pass down label value limit into implementation (#16158 )	2025-05-06 18:54:48 +01:00
ooo_head_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
ooo_isolation.go	Fix issue where queries can fail or omit OOO samples if OOO head compaction occurs between creating a querier and reading chunks (#13115 )	2023-11-24 12:38:38 +01:00
ooo_isolation_test.go	Fix issue where queries can fail or omit OOO samples if OOO head compaction occurs between creating a querier and reading chunks (#13115 )	2023-11-24 12:38:38 +01:00
querier.go	chore: enable unused-receiver rule from revive	2025-08-04 09:43:33 +00:00
querier_bench_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
querier_test.go	Apply analyzer "modernize" to the whole codebase	2025-08-27 14:48:41 +02:00
repair.go	chore!: adopt log/slog, remove go-kit/log	2024-10-07 15:58:50 -04:00
repair_test.go	feat: Allow customizing TSDB postings decoder (#13567 )	2024-11-11 07:59:24 +01:00
testutil.go	Fix linting issues found by golangci-lint v2.0.2 (#16368 )	2025-05-03 19:05:13 +02:00
tsdbblockutil.go	enable errorf rule from perfsprint linter	2024-11-06 16:50:36 +01:00

README.md

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: