Release v2.9.16

Changelog

Go Version

• 1.19.8

Dependency Updates

• github.com/klauspost/compress v1.16.4
• github.com/nats-io/jwt/v2 v2.4.1
• github.com/nats-io/nkeys v0.4.4
• golang.org/x/crypto v0.8.0
• golang.org/x/sys v0.7.0

Added

Build

• Nightly build of the “main” branch as a Docker image: synadia/nats-server:nightly-main (#3961, #3962, #3963, #3972, #4019, #4063)
• Version control SHA in the Goreleaser build of the server (#3993). Thanks for the report @jzhoucliqr!
  Monitoring
• Add server name and route remote server name to /routez (#4054)

Resolver

• Add “hard_delete” option for stored JWTs (#3783). Thanks for the contribution @JulienVdG!

Improved

JetStream

• Storage and Raft layer improvements to decrease p99 latency variance and memory pressure in high load environments (#3956, #3952, #3965, #3981, #3999, #4018, #4020, #4021, #4022, #4026, #4027, #4028, #4029, #4030, #4038, #4045, #4050, #4053)
• Don’t show Raft warning for node that is closed (#3968)
• Use pooled buffer for flushing encrypted message blocks (#3975)
• Remove snapshotting of cores and maxprocs (#3979)
• Improvements to interest-based streams to optimize when messages are deleted (#4006, #4007, #4012)
• Better handling of concurrent stream and consumer creation of the same name (#4013)
• Finer-grain locking during asset checking to reduce contention in the /healthz endpoint (#4031)
• Encrypted file stores will now limit block sizes to improve performance (#4046)
• Improve performance on storing messages with varying subjects and limits are imposed (#4048, #4057). Thanks for the report @kung-foo!

Fixed

Subjects

• Ensure subjects containing percent (%) are escaped (#4040)

Accounts

• Fix data race when setting up service import subscriptions (#4068)

Leaf

• Fix leaf client connection failing on OCSP setups (#3964)
• Fix case when allow/deny permissions on leaf connection could block legitimate interest (#4032)

Cluster

• Route disconnect not detected by ping/pong (#4016). Thanks for the contribution @sandykellagher!

JetStream

• Pull consumer not sending timeout error to clients for expired requests (#3942)
• Prevent meta leader deadlock during deletion of orphaned streams during server startup (#3945)
• Clear ack’ed messages when scaling workqueue or interest-based streams (#3960) Thanks for the report @Kaarel!
• Remove messages from interest-based stream on consumer snapshot (#3970)
• Fix potential panic in message block buffer pool (#3978)
• Fixed an issue with consumer states growing and causing instability (#3980)
• Improve handling of out-of-storage condition (#3985)
• Address memory leak of unreachable Raft groups when JetStream becomes disabled (#3986)
• Prevent Raft leader from being placed on server in lame-duck mode (#4002)
• Remove potential race condition on sysRequest (#4017)
• Fix FirstSeq not being updated with filestore when purging subject (#4041). Thanks for the contribution @MauriceVanVeen!
• Fix Raft log debug reloading (#4047)
• Ensure consumer recovers fully on restart before being eligible for leader (#4049)
• Fix incorrect check between stream source/mirror with external streams (#4052)
• Fix various conditions during Raft group recovery (#4056, #4058)

Complete Changes

v2.9.15...v2.9.16