Redis 6.0.9
===========
Upgrade urgency: SECURITY if you use an affected platform (see below).
Otherwise the upgrade urgency is MODERATE.
This release fixes a potential heap overflow when using a heap allocator other
than jemalloc or glibc's malloc. See:
https://github.com/redis/redis/pull/7963
Other fixes in this release:
New:
* Memory reporting of clients argv
* Add redis-cli control on raw format line delimiter
* Add redis-cli support for rediss:// -u prefix
* Get rss size support for NetBSD and DragonFlyBSD
Behavior changes:
* WATCH no longer ignores keys which have expired for MULTI/EXEC
* Correct OBJECT ENCODING response for stream type
* Allow blocked XREAD on a cluster replica
* TLS: Do not require CA config if not used
Bug fixes:
* INFO report real peak memory (before eviction)
* Allow requirepass config to clear the password
* Fix config rewrite file handling to make it really atomic
* Fix excessive categories being displayed from ACLs
* Add fsync in replica when full RDB payload was received
* Don't write replies to socket when output buffer limit reached
* Fix redis-check-rdb support for modules aux data
* Other smaller bug fixes
Modules API:
* Add APIs for version and compatibility checks
* Add RM_GetClientCertificate
* Add RM_GetDetachedThreadSafeContext
* Add RM_GetCommandKeys
* Add Swapdb Module Event
* RM_GetContextFlags provides indication of being in a fork child
* RM_GetContextFlags document missing flags: MULTI_DIRTY, IS_CHILD
* Expose real client on connection events
* Minor improvements to module blocked on keys
Redis 6.0.3:
Upgrade urgency CRITICAL: a crash introduced in 6.0.2 is now fixed.
Redis 6.0.2:
Upgrade urgency MODERATE: many not critical bugfixes in different areas.
Critical fix to client side caching when
keys are evicted from the tracking table but
no notifications are sent.
The following are the most serious fix:
* XPENDING should not update consumer's seen-time
* optimize memory usage of deferred replies - fixed
* Fix CRC64 initialization outside the Redis server itself.
* stringmatchlen() should not expect null terminated strings.
* Cluster nodes availability checks improved when there is
high Pub/Sub load on the cluster bus.
* Redis Benchmark: Fix coredump because of double free
* Tracking: send eviction messages when evicting entries.
* rax.c updated from upstream antirez/rax.
* fix redis 6.0 not freeing closed connections during loading.
New features:
dd
* Support setcpuaffinity on linux/bsd
* Client Side Caching: Add Tracking Prefix Number Stats in Server Info
* Add --user argument to redis-benchmark.c (ACL)
Redis 6.0.1
===========
Upgrade urgency HIGH: This release fixes a crash when builiding against
Libc malloc.
Here we revert 8110ba888, an optimization that causes a crash due to a
bug in the code. It does not happen with the default allocator because of
differences between Jemalloc and libc malloc, so this escaped all our
testing but was reported by a user. We'll add back the original optimization
that was reverted here later, after checking what happens: it is not a
critical optimization.
Redis 6.0.0 GA
==============
Upgrade urgency CRITICAL: many bugs fixed compared to the last release
candidate. Better to upgrade if you see things
affecting your environment in the changelog.
Hi all, finally we have Redis 6.0.0 GA! Enjoy this new Redis release.
Most of the documentation was updated today so that you can likely
find what you are looking for about the new features at redis.io.
This is the list of what changed compared to the previoius release candidate:
* XCLAIM AOF/replicas propagation fixed.
* Client side caching: new NOLOOP option to avoid getting notified about
changes performed by ourselves.
* ACL GENPASS now uses HMAC-SHA256 and have an optional "bits" argument.
It means you can use it as a general purpose "secure random strings"
primitive!
* Cluster "SLOTS" subcommand memory optimization.
* The LCS command is now a subcommand of STRALGO.
* Meaningful offset for replicas as well. More successful partial
resynchronizations.
* Optimize memory usage of deferred replies.
* Faster CRC64 algorithm for faster RDB loading.
* XINFO STREAM FULL, a new subcommand to get the whole stream state.
* CLIENT KILL USER <username>.
* MIGRATE AUTH2 option, for ACL style authentication support.
* Other random bugfixes.
Redis 5.0.3
===========
Upgrade urgency HIGH: Redis 5 is consolidating, upgrading is a good idea.
However there is nothing very critical here, but certain
issues resolved could lead to very rare crashes.
Welcome to Redis 5.0.3, several interesting bug fixes here:
* Redis no longer panics when you send data to a replica-mode connection that
is in MONITOR or SYNC mode.
* Fixes to certain sorted set edge cases. You are unlikely to ever notice those
issues, but now it is more correct.
* Certain BSD variants now are better supported: build & register logging
on crash.
* The networking core now recovers if an IPv6 address is listed in bind but
is actually not able to work because there is no such protocol in the
system.
* redis-cli cluster mode improved in many ways. Especially the fix subcommand
work was enhanced to cover other edge cases that were still not covered
after the work done for Redis 5.
* MEMORY USAGE is now more accurate.
* DEBUG DIGEST-VALUE added in case you want to make sure a given set of keys
(and not the whole DB) are excatly the same between two instances.
* Fix a potential crash in the networking code related to recent changes
to the way the reply is consumed.
* Reject EXEC containing write commands against an instance that changed role
from master to replica during our transaction.
* Fix a crash in KEYS and other commands using pattern matching, in an edge
case where the pattern contains a zero byte.
* Fix eviction during AOF loading due to maxmemory triggered by commands
executed in loading state.
Redis 5.0.2
===========
Upgrade urgency: CRITICAL if you use streams and consumer groups.
HIGH if you use redis-cli with Redis Cluster.
LOW otherwise.
Welcome to Redis 5.0.2. This release fixes two issues with Streams consumer
groups, where items could be returned duplicated by XREADGROUP when accessing
the history, and another bug where XREADGROUP can report some history even
if the comsumer pending list is empty. Both problems were addressed and unit
tests to avoid regressions implemented. Moreover this release fixes some
issue with redis-cli when in cluster mode. Finally some FreeBSD and DragonFly
build problems are now resolved. The list of the commits is below.
Redis 5.0.1
===========
Upgrade urgency: URGENT if you use Redis Streams. MODERATE otherwise.
Hi all, this is the first patch level release of Redis 5. It contains
both fixes and improvements. Here there is a list of the major ones, however
read the commit messages at the end of the changelog if you want to know
more about the smaller things. Let's start with the new features:
* Sentinel now supports authentication! Check the Sentinel official doc
for more info.
* Redis-cli cluster "fix" is now able to fix a big number of clusters put
in a bad condition. Previously many corner cases were not covered.
Now the critical fixes:
1. Fix RESTORE mismatch reply when certain keys already expired.
2. Fix an XCLAIM non trivial issue: sometimes the command returned a wrong
entry or desynchronized the protocol.
And now the other fixes:
3. Stack trace generation on the Raspberry PI (and 32bit ARM) fixed.
4. Don't evict expired keys when the KEYS command is called, in order to
avoid a mass deletion event. However expired keys are not displayed
by KEYS as usually.
5. Improvements in the computation of the memory used, when estimating
the AOF buffers.
6. XRANGE COUNT of 0 fixed.
7. "key misses" stats accounting fixed. Many cache misses were not counted.
8. When in MULTI state, return OOM while accumulating commands and there
is no longer memory available.
9. Fix build on FreeBSD and possibly others.
10. Fix a crash in Redis modules, thread safe context reply accumulation.
11. Fix a race condition when producing the RDB file for full SYNC.
12. Disable protected mode in Sentinel.
13. More commands now have the HELP subcommand.
14. Fixed an issue about adaptive server HZ timer.
15. Fix cluster-replica-no-failover option name.
Redis 5.0.0
===========
Upgrade urgency CRITICAL: Several fixes to streams AOF and replication.
1. The new Stream data type. https://redis.io/topics/streams-intro
2. New Redis modules APIs: Timers, Cluster and Dictionary APIs.
3. RDB now store LFU and LRU information.
4. The cluster manager was ported from Ruby (redis-trib.rb) to C code
inside redis-cli. Check `redis-cli --cluster help` for more info.
5. New sorted set commands: ZPOPMIN/MAX and blocking variants.
6. Active defragmentation version 2.
7. Improvemenets in HyperLogLog implementations.
8. Better memory reporting capabilities.
9. Many commands with sub-commands now have an HELP subcommand.
10. Better performances when clients connect and disconnect often.
11. Many bug fixes and other random improvements.
12. Jemalloc was upgraded to version 5.1
13. CLIENT UNBLOCK and CLIENT ID.
14. The LOLWUT command was added. http://antirez.com/news/123
15. We no longer use the "slave" word if not for API backward compatibility.
16. Differnet optimizations in the networking layer.
17. Lua improvements:
- Better propagation of Lua scripts to replicas / AOF.
- Lua scripts can now timeout and get in -BUSY state in the replica as well.
18. Dynamic HZ to balance idle CPU usage with responsiveness.
19. The Redis core was refactored and improved in many ways.
Redis 4.0.10 fixes a number of important issues:
* Important security issues related to the Lua scripting engine.
Please check https://github.com/antirez/redis/issues/5017
for more information.
* A bug with SCAN, SSCAN, HSCAN and ZSCAN, that may not return all the elements.
We also add a regression test that can trigger the issue often when present, and
may in theory be able to find unrelated regressions.
* A PSYNC2 bug is fixed: Redis should not expire keys when saving RDB files
because otherwise it is no longer possible to use such RDB file as a base
for partial resynchronization. It no longer represents the right state.
* Compatibility of AOF with RDB preamble when the RDB checksum is disabled.
* Sentinel bug that in some cases prevented Sentinel to detect that the master
was down immediately. A delay was added to the detection.
* Other minor issues.
Bug fixes:
- Loading two or more modules exporting native data types resulted
into the inability to reload the RDB file.
- Crash in modules when calling from Lua scripts module commands that
would block.
- A Redis Cluster crash due to mis-handling of the "migrate-to"
internal flag.
- Other smaller fixes not worth of a release per se, but nice to add
here.
Redis 4.0.0
Major features
- Redis modules system. Redis now allows developers to write modules
that can extend the Redis functionalities and implement new data
types.
- Partial Replication (PSYNC) version 2.
- Cache eviction improvements. Redis 4.0 implements LFU (Least
Frequently Used) as a new eviction algorithm, and improves the
functionality, performances and precision of the existing algorithms.
- Lazy freeing of keys. Redis is now able to delete keys in the
background in a different thread without blocking the server.
- Mixed RDB-AOF format. If enabled the new format is used when
rewriting the AOF file: the rewrite uses the more compact and faster
to generate RDB format, and an AOF stream is appended to the file.
- A new MEMORY command, able to perform memory analysis of different
kinds: troubleshooting of memory issues (with MEMORY DOCTOR, similar
to LATENCY DOCTOR), reporting of the amount of memory used by a single
key, more in-depth reporting of Redis memory usage compared to what
the INFO command offers.
- Redis Cluster support for NAT / Docker.
- Redis uses now less memory in order to store the same amount of
data. The gain depends a lot on the kind of dataset stored.
- Redis is now able to defragment the used memory and reclaim space
incrementally while running.
Smaller features
- Improvements to the RDB format to support 64 bit lengths, binary
sorted set scores, and more.
- SWAPDB command: ability to completely and immediately (no latency)
replace two Redis databases.
- Improvements to `dict.c`, the Redis hash table implementation.
- Security improvements mapping POST and Host: commands to QUIT in
order to prevent cross protocol scripting attacks.
- RPUSHX and LPUSHX now accept a variable number of elements.
- Reporting of additional memory used by copy on write in the INFO
output.
- Serious refactoring of many core parts of Redis.
Migrating from 3.2 to 4.0
- The Redis Cluster bus protocol of 4.0 is no longer compatible with
Redis 3.2.
- Redis Cluster CLUSTER NODES output is now slightly different.
- Writable slaves do not propagate writes to their sub-slaves, so
writes to writable slaves remain just local.
- The RDB format changed. Redis 4.0 is still able to read 3.2 (and all
the past versions) files, but not the other way around.
- Certain log formats and sentences are different in Redis 4.0.
- Certain INFO fields, especially related to replication, are now
different.
- GEODIST, GEOPOS and GEOHASH return values changed for non existing
keys
- The SLOWLOG command entires contain additional two fields: the
client address and name. This is documented in the SLOWLOG command online
documentation.
Upgrade urgency HIGH: Critical fix to Redis Sentinel, due to 3.2.0
regression compared to 3.0.
Hey, this is Redis 3.2.1, and this release should bring some grain of
maturity to Redis 3.2. The list of commits following this note will tell
you the details, but the main things addressed in this release are the
following:
1. A critical bug in Sentinel was hopefully fixed. During the big 3.2
refactoring of Redis Sentinel, in order to implement connection sharing
to make Sentinel able to scale better (few Sentinels to monitor many
masters), a bug was introduced that mis-counted the number of pending
commands in the Redis link. This in turn resulted into an inability to
talk with certain Redis instances. A common result of this bug was the
inability of Redis Sentinel to reconfigure back the old master, after
a failover, when it is reachable again, as the slave of the new master.
This was due to the inability to talk with the old master at all.
2. BITFIELD bugs fixed.
3. GEO commands fixes on syntax errors and edge cases.
4. RESTORE now accepts dumps generated by older Redis versions.
5. Jemalloc now is really configured to save you memory, for a problem a
change in the jemalloc configuration did not really survived when the
3.2.0 release was finalized.
6. TTL and TYPE command no longer alter the last access time of a key, for
LRU evictions purposes. A new TOUCH command was introduced *just* to
update the access time of a key.
7. A bug was fixed in redis-cli, that connected to the instance running on
the port 6379 if there was one, regardless of what was specified.
8. TCP keep alive is now enabled by default. This should fix most ghost
connections problems without resulting in any practical change in
otherwise sane deployments.
9. A Sentinel crash that could happen during failovers was fixed.
Redis 3.2 contains significant changes to the API and
implementation of Redis.
- A new set of commands for Geo indexing was added (GEOADD,
GEORADIUS and related commands).
- The new BITFIELD command handles contiguous arrays of integers
or counters of arbitrary bits width and offset inside strings.
- Memory optimizations to hold the same data in less memory.
- Lua scripts can now contain side effects using the new effect
replication.
- A complete remote Lua debugger is available in order to make
writing scripts a simpler task.
Read the release notes for the full set of changes:
https://raw.githubusercontent.com/antirez/redis/3.2/00-RELEASENOTES
--[ Redis 3.0.2 ] Release date: 4 Jun 2015
Upgrade urgency: HIGH for Redis because of a security issue.
LOW for Sentinel.
* [FIX] Critical security issue fix by Ben Murphy: http://t.co/LpGTyZmfS7
* [FIX] SMOVE reply fixed when src and dst keys are the same. (Glenn Nethercutt)
* [FIX] Lua cmsgpack lib updated to support str8 type. (Sebastian Waisbrot)
* [NEW] ZADD support for options: NX, XX, CH. See new doc at redis.io.
(Salvatore Sanfilippo)
* [NEW] Senitnel: CKQUORUM and FLUSHCONFIG commands back ported.
(Salvatore Sanfilippo and Bill Anderson)
--[ Redis 3.0.1 ] Release date: 5 May 2015
Upgrade urgency: LOW for Redis and Cluster, MODERATE for Sentinel.
* [FIX] Sentinel memory leak due to hiredis fixed. (Salvatore Sanfilippo)
* [FIX] Sentinel memory leak on duplicated instance. (Charsyam)
* [FIX] Redis crash on Lua reaching output buffer limits. (Yossi Gottlieb)
* [FIX] Sentinel flushes config on +slave events. (Bill Anderson)
--[ Redis 3.0.0 ] Release date: 1 Apr 2015
>> What's new in Redis 3.0 compared to Redis 2.8?
* Redis Cluster: a distributed implementation of a subset of Redis.
* New "embedded string" object encoding resulting in less cache
misses. Big speed gain under certain work loads.
* AOF child -> parent final data transmission to minimize latency due
to "last write" during AOF rewrites.
* Much improved LRU approximation algorithm for keys eviction.
* WAIT command to block waiting for a write to be transmitted to
the specified number of slaves.
* MIGRATE connection caching. Much faster keys migraitons.
* MIGARTE new options COPY and REPLACE.
* CLIENT PAUSE command: stop processing client requests for a
specified amount of time.
* BITCOUNT performance improvements.
* CONFIG SET accepts memory values in different units (for example
you can use "CONFIG SET maxmemory 1gb").
* Redis log format slightly changed reporting in each line the role
of the instance (master/slave) or if it's a saving child log.
* INCR performance improvements.
>> Refactoring changes (no new features nor bug fixes)
* Blocking operations full refactoring (blocked.c)
* Client output buffer memory tracking refactored.
See full release notes for 3.0.0:
https://raw.githubusercontent.com/antirez/redis/3.0/00-RELEASENOTES
* [FIX] Linenoise updated to be more VT100 compatible. (Salvatore Sanfilippo)
* [FIX] A number of typos fixed inside comments. (Various authors)
* [FIX] redis-cli no longer quits after long timeouts. (Matt Stancliff)
* [FIX] Test framework improved to detect never terminating scripts, cleanup
instances on crashes. (Salvatore Sanfilippo)
* [FIX] PFCOUNT can be used on slaves now. (Salvatore Sanfilippo)
* [FIX] ZSCAN no longer report very small scores as 0. (Matt Stancliff,
Michael Grunder, Salvatore Sanfilippo)
* [FIX] Don't show the ASCII logo if syslog is enabled. Redis is now
an Enterprise Grade product. (Salvatore Sanfilippo)
* [NEW] EXPERIMENTAL: Diskless replication, for more info check the doc at
http://redis.io/topics/replication. (Salvatore Sanfilippo).
* [NEW] Transparent Huge Pages detection and reporting in logs and
LATENCY DOCTOR output. (Salvatore Sanfilippo)
* [NEW] Many Lua scripting enhancements: Bitops API, cjson upgrade and tests,
cmsgpack upgrade. (Matt Stancliff)
* [NEW] Total and instantaneous Network bandwidth tracking in INFO.
* [NEW] DEBUG POPULATE two args form implemented (old form still works).
The second argument is the key prefix. Default is "key:" (Salvatore
Sanfilippo)
* [NEW] Check that tcp-backlog is matched by /proc/sys/net/core/somaxconn, and
warn about it if not. (Salvatore Sanfilippo)
Changes:
2.8.3
* [FIX] Sentinel instance role sampling fixed, the system is now more
reliable during failover and when reconfiguring instances with
non matching configuration.
* [FIX] Inline requests are now handled even when terminated with just LF.
* [FIX] Replication timeout handling greatly improved, now the slave is able
to ping the master while removing the old data from memory, and while
loading the new RDB file. This avoid false timeouts sensed by
masters.
* [FIX] Fixed a replication bug involving 32 bit instances and big datasets
hard to compress that resulted into more than 2GB of RDB file sent.
* [FIX] Return error for inline requests with unbalanced quotes.
* [FIX] Publish the slave replication offset even when disconnected from the
master if there is still a cached master instance.
2.8.2
* [FIX] Sentinel better desynchronization to avoid split-brain elections
where no Sentinel managed to get elected.
* [FIX] Stop accepting writes on "MISCONF" error only if master, not slave.
* [FIX] Reply to PING with an error on "MISCONF" errors.
2.8.1
* [FIX] Fixed a bug in "new Sentinel" config propagation.
* [FIX] Fixed a false positive in Redis tests.
2.8.0
* [FIX] Fixed an error in rdbWriteRaw() that should have no practical impact.
* [NEW] Log the new master when SLAVEOF command is used.
* [NEW] Sentinel code synchronized with the unstable branch, the new Sentinel
is a reimplementation that uses more reliable algorithms.
2.8.0 RC6
* [NEW] SCAN, SSCAN, HSCAN, ZSCAN commands.
2.8.0 RC5
* [FIX] redis-cli: don't crash with --bigkeys when the key no longer exist.
* [FIX] Allow AUTH / PING when disconnected from slave and serve-stale-data
is no.
* [FIX] PSYNC: safer handling of PSYNC requests with offsets in the future.
* [FIX] Replication: Fix master timeout detection.
* [FIX] Replication: Correctly install the write handler after successful
PSYNC.
2.8.0 RC4
* [FIX] Fixed a serious EVAL memory leak in the Lua stack.
* [FIX] Fixed server startup when no IPv6 address exists in any interface.
* [FIX] Send MISCONFIG error when BGSAVE fails because can't fork.
* [FIX] Memory efficiency with large (> a few kbytes) values improved
considerably.
* [NEW] DEBUG SDSLEN for sds memory debugging.
2.8.0 RC3
* [FIX] Improved expired keys collection algorithm. Even under heavy load keys
to be expired can't accumulate because of lack of CPU time.
* [FIX] Replication speed regression fixed (issue #1238).
* [FIX] Fixed an hard to trigger PSYNC bug.
* [FIX] Fixed Issue #1240, ZUNIONSTORE could lead to wrong result.
* [NEW] Add per-db average TTL information in INFO output.
* [NEW] redis-benchmark improvements.
* [NEW] dict.c API wrong usage detection.
2.8.0 RC2
* [FIX] Fixed a critical replication bug, see issue #1221.
* [NEW] The new inline protocol now accepts quoted strings like, for example
you can now type in a telnet session: set 'foo bar' "hello world\n".
2.8.0 RC1
* [NEW] Slaves are now able to partially resynchronize with the master,
so most of the times a full resynchronization with the RDB creation
in the master side is not needed when the master-slave link is
disconnected for a short amount of time.
* [NEW] Experimental IPv6 support.
* [NEW] Slaves explicitly ping masters now, a master is able to detect
a timed out slave independently.
* [NEW] Masters can stop accepting writes if not enough slaves with a given
maximum latency are connected.
* [NEW] Keyspace changes notifications via Pub/Sub.
* [NEW] CONFIG SET maxclients is now available.
* [NEW] Ability to bind multiple IP addresses.
* [NEW] Set process names so that you can recognize, in the "ps" command
output, the listening port of an instance, or if it is a saving child.
* [NEW] Automatic memory check on crash.
* [NEW] CONFIG REWRITE is able to materialize the changes in the configuration
operated using CONFIG SET into the redis.conf file.
* [NEW] More NetBSD friendly code base.
* [NEW] PUBSUB command for Pub/Sub introspection capabilities.
* [NEW] EVALSHA can now be replicated as such, without requiring to be
expanded to a full EVAL for the replication link.
* [NEW] Better Lua scripts error reporting.
* [NEW] SDIFF performance improved.
* [FIX] A number of bugfixes.
2.6.17
* [FIX] redis-cli: fix big keys search when the key no longer exist.
* [FIX] Allow AUTH / PING when disconnected from slave with serve-stale-data
on.
* [FIX] redis-benchmark: update help for new __rand_int__ form.
* [FIX] Fix broken rdbWriteRaw() return value check in rdb.c (harmless).
* [FIX] Log to what master a slave is going to connect to.
* [FIX] Only run the fast active expire cycle if master & enabled.
* [FIX] Fixed a replication bug involving 32 bit instances and big datasets
hard to compress that resulted into more than 2GB of RDB file sent.
