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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 | ||
13 | API CHANGES | |
14 | =========== | |
15 | ||
16 | * Turn commands into variadic versions when it makes sense, that is, when | |
17 | the variable number of arguments represent values, and there is no conflict | |
18 | with the return value of the command. | |
19 | ||
20 | CLUSTER | |
21 | ======= | |
22 | ||
23 | * Implement rehashing and cluster check in redis-trib. | |
24 | * Reimplement MIGRATE / RESTORE to use just in memory buffers (no disk at | |
25 | all). This will require touching a lot of the RDB stuff around, but we may | |
26 | hand with faster persistence for RDB. | |
27 | * Implement the slave nodes semantics and election. | |
28 | * Allow redis-trib to create a cluster-wide snapshot (using SYNC). | |
29 | * Allow redis-trib to restore a cluster-wide snapshot (implement UPLOAD?). | |
30 | ||
31 | SCRIPTING | |
32 | ========= | |
33 | ||
34 | * MULTI/EXEC/...: should we do more than simply ignoring it? | |
35 | * Prevent Lua from calling itself with redis("eval",...) | |
36 | * SCRIPT FLUSH or alike to start a fresh interpreter? | |
37 | * http://redis.io/topics/sponsors | |
38 | ||
39 | APPEND ONLY FILE | |
40 | ================ | |
41 | ||
42 | * in AOF rewirte use HMSET to rewrite small hashes instead of multiple calls | |
43 | to HSET. | |
44 | ||
45 | OPTIMIZATIONS | |
46 | ============= | |
47 | ||
48 | * Avoid COW due to incrementing the dict iterators counter. | |
49 | * SORT: Don't copy the list into a vector when BY argument is constant. | |
50 | * 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. | |
51 | * Read-only mode for slaves. | |
52 | * Redis big lists as linked lists of small ziplists? | |
53 | 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. | |
54 | ||
55 | RANDOM | |
56 | ====== | |
57 | ||
58 | * Server should abort when getcwd() fails if there is some kind of persistence configured. Check this in the cron loop. | |
59 | * Clients should be closed as far as the output buffer list is bigger than a given number of elements (configurable in redis.conf) | |
60 | * Should the redis default configuration, and the default redis.conf, just bind 127.0.0.1? | |
61 | ||
62 | KNOWN BUGS | |
63 | ========== | |
64 | ||
65 | * #519: Slave may have expired keys that were never read in the master (so a DEL | |
66 | is not sent in the replication channel) but are already expired since | |
67 | a lot of time. Maybe after a given delay that is undoubltly greater than | |
68 | the replication link latency we should expire this key on the slave on | |
69 | access? |