RedisTimeSeries/RedisTimeSeries v1.2.0

1.2-RC1 (v1.2.0)

on GitHub

This is the first Release Candidate for RedisTimeSeries 1.2.

• Added functionality

  • #261 Samples are compressed using Double Delta compression.
    • Based on the Gorilla paper.
      • In theory, this can save space up to 98%. (2 bits per sample in stead of 128).
      • In practice, a memory reduction of 5-8x is common but depends on the use case.
    • Initial benchmarks show performance improvements in both read and writes.
    • UNCOMPRESSED option in TS.CREATE.

• Major Enhancements

  • #241 Overwriting the last sample with the same timestamp is not allowed.
  • #237 Downsampling after time window is closed vs. downsampling with each sample.
  • #242 revised TS.INCRBY/DECRBY
    • Returns a timestamp. The behaviour is now aligned with TS.ADD.
    • The RESET functionality was removed. RESET contradicted the rewriting of the last sample (#241).
      Alternatively, you can reconstruct similar behaviour by
      • TS.ADD ts * 1 + sum aggregation
      • TS.INCRBY ts 1 + range aggregation

• Minor Enhancements

  • #230 TS.INFO now includes total samples, memory usage,first time stamp, ...
  • #230 MEMORY calculates series memory footprint.
  • #285 Changed default behaviour of TS.MRANGE to no longer returns the labels of each time-series in order reduce network traffic. Optional WITHLABELS argument added.

• Bugfixes

  • #204 Module initialization params changed to 64 bits.
  • #266 Memory leak in the aggregator context.
  • #260 Better error messages.
  • #259 #257 #219 Miscellaneous.

note: the version inside Redis will be 10200 or 1.2.0 in semantic versioning.