7.4-rc1

版本发布时间: 2024-06-06 17:07:15

redis/redis最新发布版本:8.0-m02(2024-11-04 17:16:21)

Note: License changed - see LICENSE.txt

Upgrade urgency LOW: This is the first Release Candidate for Redis 7.4.

Here is a comprehensive list of changes in this release compared to 7.2.5.

New Features

#13303 Hash - expiration of individual fields. 9 commands were introduced:
- HEXPIRE and HPEXPIRE set the remaining time to live for specific fields
- HEXPIREAT and HPEXPIREAT set the expiration time to a UNIX timestamp for specific fields
- HPERSIST removes the expiration for specific fields
- HEXPIRETIME and HPEXPIRETIME get the expiration time for specific fields
- HTTL and HPTTL get the remaining time to live for specific fields
#13117 XREAD: new id value + to start reading from the last message
#12765 HSCAN: new NOVALUES flag to report only field names
#12728 SORT, SORT_RO: allow BY and GET options in cluster mode when the pattern maps to the same slot as the key
#12299 CLIENT KILL: new optional filter: MAXAGE maxage - kill connections older than maxage seconds
#12971 Lua: expose os.clock() API for getting the elapsed time of Lua code execution
#13276 Allow SPUBLISH command within MULTI ... EXEC transactions on replica

#12898 XREADGROUP: fix entries-read inconsistency between master and replicas
#13042 SORT ... STORE: fix created lists to respect list compression and packing configs
#12817, #12905 Fix race condition issues between the main thread and module threads
#12577 Unsubscribe all clients from replica for shard channel if the master ownership changes
#12622 WAITAOF could timeout or hang if used after a module command that propagated effects only to replicas and not to AOF
#11734 BITCOUNT and BITPOS with nonexistent key and illegal arguments return an error, not 0
#12394 BITCOUNT: check for wrong argument before checking if key exists
#12961 Allow execution of read-only transactions when out of memory
#13274 Fix crash when a client performs ACL change that disconnects itself
#13311 Cluster: Fix crash due to unblocking client during slot migration

#13108 Lua: LRU eviction for scripts generated with EVAL *** BEHAVIOR CHANGE ***
#12961 Restrict the total request size of MULTI ... EXEC transactions
#12860 Redact ACL username information and mark *-key-file-pass configs as sensitive

#12838 Improve performance when many clients call PUNSUBSCRIBE / SUNSUBSCRIBE simultaneously
#12627 Reduce lag when waking WAITAOF clients and there is not much traffic
#12754 Optimize KEYS when pattern includes hashtag and implies a single slot
#11695 Reduce memory and improve performance by replacing cluster metadata with slot specific dictionaries
#13087 SCRIPT FLUSH ASYNC now does not block the main thread
#12996 Active memory defragmentation efficiency improvements
#12899 Improve performance of read/update operation during rehashing
#12536 SCAN ... MATCH: Improve performance when the pattern implies cluster slot
#12450 ZRANGE ... LIMIT: improved performance

#13133 Lua: allocate VM code with jemalloc instead of libc and count it as used memory *** BEHAVIOR CHANGE ***
#12171 ACL LOAD: do not disconnect all clients *** BEHAVIOR CHANGE ***
#13020 Allow adjusting defrag configurations while active defragmentation is running
#12949 Increase the accuracy of avg_ttl (the average keyspace keys TTL)
#12977 Allow running WAITAOF in scripts
#12782 Implement TCP Keep-Alives across most Unix-like systems
#12707 Improved error codes when rejecting scripts in cluster mode
#12596 Support XREAD ... BLOCK in scripts; rejected only if it ends up blocking

#12849 INFO: pubsub_clients - number of clients in Pub/Sub mode
#12966 INFO: watching_clients - number of clients that are watching keys
#12966 INFO: total_watched_keys - number of watched keys
#12476 INFO: client_query_buffer_limit_disconnections - count client input buffer OOM events
#12476 INFO: client_output_buffer_limit_disconnections - count client output buffer OOM events
#12996 INFO: allocator_muzzy - memory returned to the OS but still shows as RSS until the OS reclaims it
#13108 INFO: evicted_scripts - number of evicted eval scripts. Users can check it to see if they are abusing EVAL
#12996 MEMORY STATS: allocator.muzzy - memory returned to the OS but still shows as RSS until the OS reclaims it
#12913 INFO MEMORY mem_overhead_db_hashtable_rehashing - memory resharding overhead (only the memory that will be released soon)
#12913 MEMORY STATS: overhead.db.hashtable.lut - total overhead of dictionary buckets in databases
#12913 MEMORY STATS: overhead.db.hashtable.rehashing - temporary memory overhead of database dictionaries currently being rehashed
#12913 MEMORY STATS: db.dict.rehashing.count - number of top level dictionaries currently being rehashed
#12966 CLIENT LIST: watch - number of keys each client is currently watching

#12985 New API calls: RM_TryCalloc and RM_TryRealloc - allow modules to handle memory allocation failures gracefully
#13069 New API call: RM_ClusterKeySlot - which slot a key will hash to
#13069 New API call: RM_ClusterCanonicalKeyNameInSlot - get a consistent key that will map to a slot
#12486 New API call: RM_AddACLCategory - allow modules to declare new ACL categories

#12178 New configuration parameters: max-new-connections-per-cycle and max-new-tls-connections-per-cycle to limit the number of new client connections per event-loop cycle
#7351 Rename some CPU configuration parameters for style alignment. Added alias to the old names to avoid breaking change

#10609 redis-cli: new -t <timeout> argument: specify server connection timeout in seconds
#11315 redis-cli: new -4 and -6 flags to prefer IPV4 or IPV6 on DNS lookup
#12862 redis-cli: allows pressing up arrow to return any command (including sensitive commands which are still not persisted)
#12543 redis-cli: add reverse history search (like Ctrl+R in terminals)
#12826 redis-cli: add --keystats and --keystats-samples to combines --memkeys and --bigkeys with additional distribution data
#12735 redis-cli: fix: --bigkeys and --memkeys now work on cluster replicas
#9411 redis-benchmark: add support for binary strings
#12986 redis-benchmark: fix: pick random slot for a node to distribute operation across slots