v5.9.1

Fixed

• Fixes a bug that results in some metrics not appearing on the HTTP endpoints.
  (#231)
• Updates metriken and histogram dependencies. (#230)

v5.9.0

Changed

• Moved metrics file exposition settings to separate config section. (#221)
• Default metrics interval is now one second. (#222)
• Updated Momento SDK to version 0.39.7. (#223)

v5.8.0

Changed

• Kafka client improvements including TLS and compression support. (#208)

Added

• A /quitquitquit handler for graceful early termination. (#212)

v5.7.0

Changed

• OpenSSL is now the default SSL/TLS provider. BoringSSL is still available
  through the use of feature flags. (#194)

Added

• Support for configuring the interval for file exposition allowing for finer
  resolution artifacts. (#192)
• Approximate compression ratio for message and value payloads. (#191)
• Support the list_remove command for Momento. (#198)
• New metrics for dropped requests. (#201)

v5.6.0

Changed

• metriken-exposition is updated which results in differences for the
  file-based metric exposition. (#185 #187)
• Metrics reporting for both stdout and file output are now roughly aligned to
  the top of the second. This allows easier correlation with other metric
  artifacts. (#188)

Fixed

• h2 updated to address RUSTSEC-2024-0019

v5.5.0

Added

• Support for writing metrics to a Parquet file.

Fixes

• Updates mio to address RUSTSEC-2024-0019

v5.4.0

Added

• Advanced ratelimit controller that can produce ramps, loops, mirrored ramps,
  and random steps.
• Latency percentiles now include max latency and are included in the json
  output.
• Blabber protocol support for listening to actively published messages.

Fixed

• Fixes incorrect implementation of list_length for Momento.

v5.3.0

Changed

• Metrics endpoints now use a configurable integration period controlled by the
  value for the interval in the general config section. This means that
  percentile metrics will be reflect the behavior across that period of time.
• Use rustcommon compact histogram instead of the local implementation.

Added

• Support for benchmarking Apache Kafka.

Fixed

• Early connection attempts are now reflected in the stats for the first window.

v5.2.0

Changed

• Metrics library (metriken) updated to replace heatmaps with histograms,
  which reduces cost on the metrics write path.

Added

• Dataspec now supports merging of histograms.

Fixed

• RUSTSEC-2023-0065

v5.1.0

Added

• rpc-perf can now generate zrange commands with the by_score option for both
  the momento and redis protocols.
• Dataspec crate which allows easy consumption of JSON output.

Changed

• rpc-perf will now set TCP_NODELAY by default on all TCP connections it
  creates.
• The default buffer size for the memcached client has been increased from 4KB
  to 16KB.

Fixed

• Hit/miss statistics in the output json will now have their correct values
  instead of always being 0.