Impovements for: Redis timer, hashes rehashing, keys collection.

[redis.git] / TODO

diff --git a/TODO b/TODO
index 580adda6959419c26d4b5e9cce929dec7d27c300..145ec5243e93a72686067cb180441b583d06f27f 100644 (file)
--- a/TODO
+++ b/TODO
@@ -2,59 +2,44 @@ Redis TODO
 ----------
 
 WARNING: are you a possible Redis contributor?
 ----------
 
 WARNING: are you a possible Redis contributor?

-         Before implementing what is listed what is listed in this file
+         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
 
          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
 

-DISKSTORE TODO
-==============

 
 

-* Check that 00/00 and ff/ff exist at startup, otherwise exit with error.
-* Implement sync flush option, where data is written synchronously on disk when a command is executed.
-* Implement MULTI/EXEC as transaction abstract API to diskstore.c, with transaction_start, transaction_end, and a journal to recover.
-* Stop BGSAVE thread on shutdown and any other condition where the child is killed during normal bgsave.
-* Fix RANDOMKEY to really do something interesting
-* Fix DBSIZE to really do something interesting
-* Add a DEBUG command to check if an entry is or not in memory currently
+CLUSTER
+=======

 
 

-* dscache.c near 236, kobj = createStringObject... we could use static obj.
+* 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?).

 
 

-APPEND ONLY FILE
-================
+SCRIPTING
+=========

 
 

-* in AOF rewirte use HMSET to rewrite small hashes instead of multiple calls
-  to HSET.
+* SCRIPT FLUSH or alike to start a fresh interpreter?

 
 OPTIMIZATIONS
 =============
 
 
 OPTIMIZATIONS
 =============
 

-* Avoid COW due to incrementing the dict iterators counter.

 * 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.
 * 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.

-
-REPORTING
-=========
-
-* Better INFO output with sections.
-
-RANDOM
-======
-
-* Clients should be closed as far as the output buffer list is bigger than a given number of elements (configurable in redis.conf)
-* Should the redis default configuration, and the default redis.conf, just bind 127.0.0.1?
+* 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
 ==========
 
 
 KNOWN BUGS
 ==========
 

-* What happens in the following scenario:
-    1) We are reading an AOF file.
-    2) SETEX FOO 5 BAR
-    3) APPEND FOO ZAP
-    What happens if between 1 and 2 for some reason (system under huge load
-    or alike) too many time passes? We should prevent expires while the
-    AOF is loading.
-
+* #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?