Globals protection global() function modified for speed and correctness.

[redis.git] / TODO

diff --git a/TODO b/TODO
index d729196c1b88ba73a9bf565ae0223338e0fcff8f..145ec5243e93a72686067cb180441b583d06f27f 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,18 +1,45 @@
-- GETSET
-- Fix pure-PHP lib for the new protocol
-- keys expire
-- sunion ssub
-- network layer stresser in test in demo
-- maxclients directive
-- check 'server.dirty' everywere
-- replication automated tests
-- an external tool able to perform the 'difference' between two Redis servers. It's like 'diff', but against Redis servers, and the output is the set of commands needed to turn the first server into the second, suitable to be sent via netcat.
-
-   $ ./redis-diff 192.168.1.1 192.168.1.2 > diff.txt
-   $ cat diff.txt | nc 192.168.1.1 6379
-   $ ./redis-diff 192.168.1.1 192.168.1.2
-   $ # No output now the servers are identical
-
-This command should be smart and don't use too much memory, that is, take two connections at the same time against the two servers and perform the comparison key by key. Probably the initial "KEYS *" is unavoidable.
-
-- objects sharing, "objectsharing yes", "objectsharingpool 1024"
+Redis TODO
+----------
+
+WARNING: are you a possible Redis contributor?
+         Before implementing what is listed in this file
+         please drop a message in the Redis google group or chat with
+         antirez or pietern on irc.freenode.org #redis to check if the work
+         is already in progress and if the feature is still interesting for
+         us, and *how* exactly this can be implemented to have good changes
+         of a merge. Otherwise it is probably wasted work! Thank you
+
+
+CLUSTER
+=======
+
+* Implement rehashing and cluster check in redis-trib.
+* Reimplement MIGRATE / RESTORE to use just in memory buffers (no disk at
+  all). This will require touching a lot of the RDB stuff around, but we may
+  hand with faster persistence for RDB.
+* Implement the slave nodes semantics and election.
+* Allow redis-trib to create a cluster-wide snapshot (using SYNC).
+* Allow redis-trib to restore a cluster-wide snapshot (implement UPLOAD?).
+
+SCRIPTING
+=========
+
+* SCRIPT FLUSH or alike to start a fresh interpreter?
+
+OPTIMIZATIONS
+=============
+
+* 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.
+* Read-only mode for slaves.
+* Redis big lists as linked lists of small ziplists?
+  Possibly a simple heuristic that join near nodes when some node gets smaller than the low_level, and split it into two if gets bigger than high_level.
+
+KNOWN BUGS
+==========
+
+* #519: Slave may have expired keys that were never read in the master (so a DEL
+  is not sent in the replication channel) but are already expired since
+  a lot of time. Maybe after a given delay that is undoubtably greater than
+  the replication link latency we should expire this key on the slave on
+  access?