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WATCH is now affected only when write commands actually modify the key content
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1 Redis TODO and Roadmap
2 ----------------------
3
4 VERSION 2.2 TODO (Optimizations and latency)
5 ============================================
6
7 * SETNX when failing should not affect WATCH
8 * Support for syslog(3).
9 * Document ZCOUNT.
10 * Change the implementation of ZCOUNT to use the augmented skiplist in order to be much faster.
11 * Add an explicit test for MULTI/EXEC reloaded in the AOF.
12
13 VM TODO
14 =======
15
16 * Use multiple open FDs against the VM file, one for thread.
17 * 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.
18
19 STRING COMMANDS
20 ===============
21
22 * Implement STRLEN, PEEK, POKE, SETBIT, GETBIT
23
24 OTHER IMPORTANT THINGS THAT WILL BE ADDED BUT I'M NOT SURE WHEN
25 ===============================================================
26
27 BIG ONES:
28
29 * BRPOPLPUSH
30 * Specially encoded memory-saving integer sets.
31 * A command to export a JSON dump (there should be mostly working patch needing major reworking).
32 * Specially encoded sets of integers (this includes a big refactoring providing an higher level layer for Sets manipulation)
33
34 SMALL ONES:
35
36 * 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.
37 * Delete on writes against expire policy should only happen after argument parsing for commands doing their own arg parsing stuff.
38 * 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.
39 * MSADD (n keys) (n values). See this thread in the Redis google group: http://groups.google.com/group/redis-db/browse_thread/thread/e766d84eb375cd41
40 * Don't save empty lists / sets / zsets on disk with snapshotting.
41 * Remove keys when a list / set / zset reaches length of 0.
42 * 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.
43 * PING the master from time to time to check if it's gone.
44
45 THE "MAYBE" TODO LIST: things that may or may not get implemented
46 =================================================================
47
48 Most of this can be seen just as proposals, the fact they are in this list
49 it's not a guarantee they'll ever get implemented ;)
50
51 * SORT: Don't copy the list into a vector when BY argument is constant.
52 * 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.
53 * 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.
54 * Read-only mode.
55 * Kill the delete-on-write behavior of expires, replicating DELs
56 * Multiple BY in SORT.
57
58 KNOWN BUGS
59 ==========
60
61 * 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.