Version 0.9.1

Bug fixes

• Always stop on USR2 signal (previously did not stop with disabled dump/restore) #135
• Some fixes in carbonserver (thanks Vladimir Smirnov)

Version 0.9.0

Features

• Completely new internal architecture
• Removed flush to whisper and stop on USR2 signal. Use dump/restore instead
• Removed global queue (channel) between receivers and cache, added optional per-receiver queues
• Built-in carbonserver (thanks Vladimir Smirnov)
• Added runtime tunables to internal metrics #70

Version 0.8.1

Bug fixes

• The synchronous config reload (HUP signal) and launch of the internal collecting statistics procedure (every "metric-interval") could cause deadlock (thanks Maxim Ivanov)

Version 0.8.0

Features

• Fully refactored and optimizer cache module (core of go-carbon) (thanks Maxim Ivanov)
• Added noop cache.write-strategy (thanks Maxim Ivanov)
• New optional dump/restore functional for minimize data loss on restart
• Refactored internal stat mechanics. common.graph-prefix and common.metric-interval now can be changed without restart (on HUP signal)
• Customizable internal metrics endpoint. common.metric-endpoint param. Valid values: "local" and "" (write directly to whisper), "tcp://host:port", "udp://host:port"

Version 0.7.3

Features

• Added cache.write-strategy option (values "max" or "sorted") (thanks Alexander Akulov)

Bug fixes

• commitedPoints metric renamed to committedPoints

Version 0.7.2

Features

• Added sparse file creation (whisper.sparse-create config option)
• Enable reload in init script (thanks Jose Riguera)

Bug fixes

• Don't try to create whisper file if exists with bad permissions #21
• Clean up schemas parser code (thanks Dieter Plaetinck)
• Better go-whisper error handling (thanks Hiroaki Nakamura)

Version 0.7.1

Features

• Fixed problem: Points in queue (channel) between cache and persister subsystems was invisible for carbonlink

Version 0.7

Features

• Grace stop on USR2 signal: close all socket listeners, flush cache to disk and stop carbon
• Reload persister config (whisper section of main config, storage-schemas.conf and storage-aggregation.conf) on HUP signal

Bug fixes

• NaN values being saved in Whisper datafiles #17 (thanks Andrew Hayworth)
• Cache may start save points only after first checkpoint
• Decimal numbers in log files instead of hexademical #22
• May crash on bad pickle message with big message size in header #30. Added option pickle.max-message-size with 64 MB default value
• Improved throttling (max-updates-per-second) performance #32

Version 0.7-beta4

Features

• Grace stop on USR2 signal: close all socket listeners, flush cache to disk and stop carbon
• Reload persister config (whisper section of main config, storage-schemas.conf and storage-aggregation.conf) on HUP signal

Bug fixes

• NaN values being saved in Whisper datafiles #17 (thanks Andrew Hayworth)
• Cache may start save points only after first checkpoint
• Decimal numbers in log files instead of hexademical #22
• May crash on bad pickle message with big message size in header #30. Added option pickle.max-message-size with 64 MB default value

Version 0.6

Features

• metric-interval option
• Cache module optimization
• Compiled with golang 1.5.1
• RPM init script checks config before restart
• Debug logging of bad pickle messages

Bug fixes

• Improved validation of bad wsp files