« Changelog History


Prometheus v0.9.0 Release Notes

Release Date: 2015-01-23 // about 9 years ago
    • 💻 [CHANGE] Reworked command line flags, now more consistent and taking into account needs of the new storage backend (see below).
    • [CHANGE] Metric names are dropped after certain transformations.
    • [CHANGE] Changed partitioning of summary metrics exported by Prometheus.
    • [CHANGE] Got rid of Gerrit as a review tool.
    • 0️⃣ [CHANGE] 'Tabular' view now the default (rather than 'Graph') to avoid running very expensive queries accidentally.
    • ⬆️ [CHANGE] On-disk format for stored samples changed. For upgrading, you have to nuke your old files completely. See "Complete rewrite of the storage
    • 🚚 [CHANGE] Removed 2nd argument from delta.
    • [FEATURE] Added a deriv function.
    • [FEATURE] Console templates.
    • [FEATURE] Added absent function.
    • [FEATURE] Allow omitting the metric name in queries.
    • 🛠 [BUGFIX] Removed all known race conditions.
    • 🛠 [BUGFIX] Metric mutations now handled correctly in all cases.
    • [ENHANCEMENT] Proper double-start protection.
    • [ENHANCEMENT] Complete rewrite of the storage layer. Benefits include:
      • Better query performance.
      • More samples in less RAM.
      • Better memory management.
      • Scales up to millions of time series and thousands of samples ingested per second.
      • Purging of obsolete samples much cleaner now, up to completely "forgetting" obsolete time series.
      • Proper instrumentation to diagnose the storage layer with... well... Prometheus.
      • Pure Go implementation, no need for cgo and shared C libraries anymore.
      • Better concurrency.
    • [ENHANCEMENT] Copy-on-write semantics in the AST layer.
    • [ENHANCEMENT] Switched from Go 1.3 to Go 1.4.
    • [ENHANCEMENT] Vendored external dependencies with godeps.
    • 🚚 [ENHANCEMENT] Numerous Web UI improvements, moved to Bootstrap3 and Rickshaw 1.5.1.
    • 🐳 [ENHANCEMENT] Improved Docker integration.
    • [ENHANCEMENT] Simplified the Makefile contraption.
    • [CLEANUP] Put meta-data files into proper shape (LICENSE, README.md etc.)
    • 👕 [CLEANUP] Removed all legitimate 'go vet' and 'golint' warnings.
    • 🚚 [CLEANUP] Removed dead code.