TODO

   1 Redis TODO and Roadmap
   2 ----------------------
   3
   4 VERSION 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 * Command table -> hash table, with support for command renaming
  11
  12 VM TODO
  13 =======
  14
  15 * Use multiple open FDs against the VM file, one for thread.
  16 * 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.
  17
  18 STRING COMMANDS
  19 ===============
  20
  21 * Implement STRLEN, PEEK, POKE, SETBIT, GETBIT
  22
  23 OTHER IMPORTANT THINGS THAT WILL BE ADDED BUT I'M NOT SURE WHEN
  24 ===============================================================
  25
  26 BIG ONES:
  27
  28 * BRPOPLPUSH
  29 * Specially encoded memory-saving integer sets.
  30 * A command to export a JSON dump (there should be mostly working patch needing major reworking).
  31 * Specially encoded sets of integers (this includes a big refactoring providing an higher level layer for Sets manipulation)
  32
  33 SMALL ONES:
  34
  35 * 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.
  36 * Delete on writes against expire policy should only happen after argument parsing for commands doing their own arg parsing stuff.
  37 * 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.
  38 * MSADD (n keys) (n values). See this thread in the Redis google group: http://groups.google.com/group/redis-db/browse_thread/thread/e766d84eb375cd41
  39 * Don't save empty lists / sets / zsets on disk with snapshotting.
  40 * Remove keys when a list / set / zset reaches length of 0.
  41 * 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.
  42 * PING the master from time to time to check if it's gone.
  43
  44 THE "MAYBE" TODO LIST: things that may or may not get implemented
  45 =================================================================
  46
  47 Most of this can be seen just as proposals, the fact they are in this list
  48 it's not a guarantee they'll ever get implemented ;)
  49
  50 * SORT: Don't copy the list into a vector when BY argument is constant.
  51 * 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.
  52 * 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.
  53 * Read-only mode.
  54 * Kill the delete-on-write behavior of expires, replicating DELs
  55 * Multiple BY in SORT.
  56
  57 KNOWN BUGS
  58 ==========
  59
  60 * 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.
  61
  62 REDIS CLI TODO
  63 ==============
  64
  65 * Computer parsable output generation
  66 * Memoize return values so that they can be used later as arguments, like $1