TODO

   1 Redis TODO
   2 ----------
   3
   4 WARNING: are you a possible Redis contributor?
   5          Before implementing what is listed what is listed in this file
   6          please drop a message in the Redis google group or chat with
   7          antirez or pietern on irc.freenode.org #redis to check if the work
   8          is already in progress and if the feature is still interesting for
   9          us, and *how* exactly this can be implemented to have good changes
  10          of a merge. Otherwise it is probably wasted work! Thank you
  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 * mmap the swap file.
  18 * Use just a single IO Job to swap out a key, and add a mutex so that pages in the page table can be marked as used and scanned from the thread itself.
  19
  20 REPLICATION
  21 ===========
  22
  23 * PING between master and slave from time to time, so we can subject the
  24 master-slave link to timeout, and detect when the connection is gone even
  25 if the socket is still up.
  26
  27 OPTIMIZATIONS
  28 =============
  29
  30 * SORT: Don't copy the list into a vector when BY argument is constant.
  31 * 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.
  32 * Read-only mode for slaves.
  33
  34 KNOWN BUGS
  35 ==========
  36
  37 * What happens in the following scenario:
  38     1) We are reading an AOF file.
  39     2) SETEX FOO 5 BAR
  40     3) APPEND FOO ZAP
  41     What happens if between 1 and 2 for some reason (system under huge load
  42     or alike) too many time passes? We should prevent expires while the
  43     AOF is loading.
  44