History

beorn7 817a2396cb Name float values as "floats", not as "values" In the past, every sample value was a float, so it was fine to call a variable holding such a float "value" or "sample". With native histograms, a sample might have a histogram value. And a histogram value is still a value. Calling a float value just "value" or "sample" or "V" is therefore misleading. Over the last few commits, I already renamed many variables, but this cleans up a few more places where the changes are more invasive. Note that we do not to attempt naming in the JSON APIs or in the protobufs. That would be quite a disruption. However, internally, we can call variables as we want, and we should go with the option of avoiding misunderstandings. Signed-off-by: beorn7 <beorn@grafana.com>		2 years ago
..
agent	Name float values as "floats", not as "values"	2 years ago
chunkenc	Add support for native histograms to concreteSeriesIterator	2 years ago
chunks	Fix: getting rid of EncOOOXOR chunk encoding (#12111 )	2 years ago
docs	…
encoding	…
errors	Fix context.Canceled wrapping in compaction	2 years ago
fileutil	…
goversion	…
index	…
record	…
testdata	…
tombstones	…
tsdbutil	Name float values as "floats", not as "values"	2 years ago
wlog	Feat: metrics for head_chunks & wal folders (#12013 )	2 years ago
.gitignore	…
CHANGELOG.md	…
README.md	…
block.go	…
block_test.go	Name float values as "floats", not as "values"	2 years ago
blockwriter.go	…
blockwriter_test.go	Name float values as "floats", not as "values"	2 years ago
compact.go	Allow populate block logic in compact to be overriden outside Prometheus (#11711 )	2 years ago
compact_test.go	Name float values as "floats", not as "values"	2 years ago
db.go	Adds an affirmative log message for successful WAL repair (#12135 )	2 years ago
db_test.go	Name float values as "floats", not as "values"	2 years ago
example_test.go	…
exemplar.go	…
exemplar_test.go	…
head.go	Name float values as "floats", not as "values"	2 years ago
head_append.go	tsdb: Improve a couple of histogram documentation comments	2 years ago
head_bench_test.go	…
head_read.go	tsdb: Fix a comment in tsdb/head_read.go	2 years ago
head_read_test.go	…
head_test.go	Name float values as "floats", not as "values"	2 years ago
head_wal.go	Use zeropool.Pool to workaround SA6002 (#12189 )	2 years ago
isolation.go	…
isolation_test.go	…
mocks_test.go	…
ooo_head.go	Name float values as "floats", not as "values"	2 years ago
ooo_head_read.go	Add unit test and also protect truncateOOO	2 years ago
ooo_head_read_test.go	Name float values as "floats", not as "values"	2 years ago
ooo_head_test.go	Name float values as "floats", not as "values"	2 years ago
querier.go	Allow populate block logic in compact to be overriden outside Prometheus (#11711 )	2 years ago
querier_bench_test.go	Optimization on `mergedStringIter` (#12132 )	2 years ago
querier_test.go	Name float values as "floats", not as "values"	2 years ago
repair.go	…
repair_test.go	…
tsdbblockutil.go	…
wal.go	Use zeropool.Pool to workaround SA6002 (#12189 )	2 years ago
wal_test.go	…

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: