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1Redis TODO and Roadmap
2----------------------
3
4VERSION 2.2 TODO (Optimizations and latency)
5============================================
6
7* Support for syslog(3).
8* Change the implementation of ZCOUNT to use the augmented skiplist in order to be much faster.
9* Add an explicit test for MULTI/EXEC reloaded in the AOF.
10
11VM TODO
12=======
13
14* Use multiple open FDs against the VM file, one for thread.
15* Check what happens performance-wise if instead of creating threads again and again the same threads are reused forever. Note: this requires a way to disable this clients in the child, but waiting for empty new jobs queue can be enough.
16
17STRING COMMANDS
18===============
19
20* Implement STRLEN, PEEK, POKE, SETBIT, GETBIT
21
22OTHER IMPORTANT THINGS THAT WILL BE ADDED BUT I'M NOT SURE WHEN
23===============================================================
24
25BIG ONES:
26
27* BRPOPLPUSH
28* Specially encoded memory-saving integer sets.
29* A command to export a JSON dump (there should be mostly working patch needing major reworking).
30* Specially encoded sets of integers (this includes a big refactoring providing an higher level layer for Sets manipulation)
31
32SMALL ONES:
33
34* If sizeof(double) == sizeof(void*) we could store the double value of sorted sets directly in place of the pointer instead of allocating it in the heap.
35* Delete on writes against expire policy should only happen after argument parsing for commands doing their own arg parsing stuff.
36* Give errors when incrementing a key that does not look like an integer, when providing as a sorted set score something can't be parsed as a double, and so forth.
37* MSADD (n keys) (n values). See this thread in the Redis google group: http://groups.google.com/group/redis-db/browse_thread/thread/e766d84eb375cd41
38* Don't save empty lists / sets / zsets on disk with snapshotting.
39* Remove keys when a list / set / zset reaches length of 0.
40* An option to exec a command slave-side if the master connection is lost: even cooler: if the script returns "0" the slave elects itself as master, otherwise continue trying to reconnect.
41* PING the master from time to time to check if it's gone.
42
43THE "MAYBE" TODO LIST: things that may or may not get implemented
44=================================================================
45
46Most of this can be seen just as proposals, the fact they are in this list
47it's not a guarantee they'll ever get implemented ;)
48
49* SORT: Don't copy the list into a vector when BY argument is constant.
50* Write the hash table size of every db in the dump, so that Redis can resize the hash table just one time when loading a big DB.
51* Byte Array type (BA prefixed commands): BASETBIT BAGETBIT BASETU8 U16 U32 U64 S8 S16 S32 S64, ability to atomically INCRBY all the base types. BARANGE to get a range of bytes as a bulk value, BASETRANGE to set a range of bytes.
52* Read-only mode.
53* Kill the delete-on-write behavior of expires, replicating DELs
54* Multiple BY in SORT.
55
56KNOWN BUGS
57==========
58
59* LRANGE and other commands are using 32 bit integers for ranges, and overflows are not detected. So LRANGE mylist 0 23498204823094823904823904 will have random effects.