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| author | sundb <sundbcn@gmail.com> | 2021-08-10 14:18:49 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-08-10 09:18:49 +0300 |
| commit | 02fd76b97cbc5b8ad6f4c81c8538f02c76cbed46 (patch) | |
| tree | 7b40fbf03f5003c9993451dfe5b8fd902570ac51 /redis.conf | |
| parent | cbda492909cd2fff25263913cd2e1f00bc48a541 (diff) | |
| download | redis-02fd76b97cbc5b8ad6f4c81c8538f02c76cbed46.tar.gz | |
Replace all usage of ziplist with listpack for t_hash (#8887)
Part one of implementing #8702 (taking hashes first before other types)
## Description of the feature
1. Change ziplist encoded hash objects to listpack encoding.
2. Convert existing ziplists on RDB loading time. an O(n) operation.
## Rdb format changes
1. Add RDB_TYPE_HASH_LISTPACK rdb type.
2. Bump RDB_VERSION to 10
## Interface changes
1. New `hash-max-listpack-entries` config is an alias for `hash-max-ziplist-entries` (same with `hash-max-listpack-value`)
2. OBJECT ENCODING will return `listpack` instead of `ziplist`
## Listpack improvements:
1. Support direct insert, replace integer element (rather than convert back and forth from string)
3. Add more listpack capabilities to match the ziplist ones (like `lpFind`, `lpRandomPairs` and such)
4. Optimize element length fetching, avoid multiple calculations
5. Use inline to avoid function call overhead.
## Tests
1. Add a new test to the RDB load time conversion
2. Adding the listpack unit tests. (based on the one in ziplist.c)
3. Add a few "corrupt payload: fuzzer findings" tests, and slightly modify existing ones.
Co-authored-by: Oran Agra <oran@redislabs.com>
Diffstat (limited to 'redis.conf')
| -rw-r--r-- | redis.conf | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/redis.conf b/redis.conf index 84f492b88..84f45fdb7 100644 --- a/redis.conf +++ b/redis.conf @@ -1704,8 +1704,8 @@ notify-keyspace-events "" # Hashes are encoded using a memory efficient data structure when they have a # small number of entries, and the biggest entry does not exceed a given # threshold. These thresholds can be configured using the following directives. -hash-max-ziplist-entries 512 -hash-max-ziplist-value 64 +hash-max-listpack-entries 512 +hash-max-listpack-value 64 # Lists are also encoded in a special way to save a lot of space. # The number of entries allowed per internal list node can be specified |