Redis TODO and Roadmap ---------------------- VERSION 2.2 TODO (Optimizations and latency) ============================================ * Support for syslog(3). * Change the implementation of ZCOUNT to use the augmented skiplist in order to be much faster. * Add an explicit test for MULTI/EXEC reloaded in the AOF. VM TODO ======= * Use multiple open FDs against the VM file, one for thread. * 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. STRING COMMANDS =============== * Implement STRLEN, PEEK, POKE, SETBIT, GETBIT OTHER IMPORTANT THINGS THAT WILL BE ADDED BUT I'M NOT SURE WHEN =============================================================== BIG ONES: * BRPOPLPUSH * Specially encoded memory-saving integer sets. * A command to export a JSON dump (there should be mostly working patch needing major reworking). * Specially encoded sets of integers (this includes a big refactoring providing an higher level layer for Sets manipulation) SMALL ONES: * 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. * Delete on writes against expire policy should only happen after argument parsing for commands doing their own arg parsing stuff. * 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. * MSADD (n keys) (n values). See this thread in the Redis google group: http://groups.google.com/group/redis-db/browse_thread/thread/e766d84eb375cd41 * Don't save empty lists / sets / zsets on disk with snapshotting. * Remove keys when a list / set / zset reaches length of 0. * 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. * PING the master from time to time to check if it's gone. THE "MAYBE" TODO LIST: things that may or may not get implemented ================================================================= Most of this can be seen just as proposals, the fact they are in this list it's not a guarantee they'll ever get implemented ;) * SORT: Don't copy the list into a vector when BY argument is constant. * 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. * 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. * Read-only mode. * Kill the delete-on-write behavior of expires, replicating DELs * Multiple BY in SORT. KNOWN BUGS ========== * 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.