Ledisdb is a high performance NoSQL like Redis written by go. It supports some data structure like kv, list, hash, zset, bitmap,set.
LedisDB now supports multiple databases as backend to store data, you can test and choose the proper one for you.
- Rich data structure: KV, List, Hash, ZSet, Bitmap, Set.
- Stores lots of data, over the memory limit.
- Various backend database to use: LevelDB, goleveldb, LMDB, RocksDB, BoltDB, Memory.
- Supports transaction using LMDB or BotlDB.
- Supports lua scripting.
- Supports expiration and ttl.
- Supports using redis-cli directly.
- Easy to embed in your own Go application.
- HTTP API support, json/bson/msgpack output.
- Replication to guarantee data safe.
- Supplies tools to load, dump, repair database.
Create a workspace and checkout ledisdb source
mkdir $WORKSPACE
cd $WORKSPACE
git clone git@github.com:siddontang/ledisdb.git src/github.com/siddontang/ledisdb
cd src/github.com/siddontang/ledisdb
#install go dependences
./bootstrap.sh
#set build and run environment
source dev.sh
make
make test
LedisDB supports building with godep which can manage LedisDB go dependence automatically.
-
Install leveldb and snappy.
LedisDB supplies a simple script to install leveldb and snappy:
sudo sh tools/build_leveldb.sh
It will default install leveldb at /usr/local/leveldb and snappy at /usr/local/snappy.
LedisDB use the modified LevelDB for better performance, see here.
You can use other LevelDB (like Hyper LevelDB, Basho LevelDB) instead easily, the only thing you may pay attention to is that the header files must be in
include/leveldb
folder notinclude/hyperleveldb
or other. -
Set
LEVELDB_DIR
andSNAPPY_DIR
to the actual install path in dev.sh. -
make clean && make
-
Install rocksdb(
make shared_lib
) and snappy first.LedisDB has not supplied a simple script to install, maybe later.
-
Set
ROCKSDB_DIR
andSNAPPY_DIR
to the actual install path indev.sh
. -
make clean && make
Because RocksDB API may change sometimes, LedisDB may not build successfully. Now LedisDB supports RocksDB version 3.5 or newest master branch.
LedisDB now supports goleveldb, lmdb, leveldb, rocksdb, boltdb, memory. it will use goleveldb as default to store data if you don't set.
Choosing a store database to use is very simple, you have two ways:
-
Set in server config file
db_name = "leveldb"
-
Set in command flag
ledis-server -config=/etc/ledis.conf -db_name=leveldb
Flag command set will overwrite config set.
- Compile and install lua
- Set
LUA_DIR
to the actual path indev.sh
make clean && make
LedisDB uses toml as the configuration format. The basic configuration ./etc/ledis.conf
in LedisDB source may help you.
If you don't use a configuration, LedisDB will use the default for you.
//set run environment if not
source dev.sh
ledis-server -config=/etc/ledis.conf
//another shell
ledis-cli -p 6380
ledis 127.0.0.1:6380> set a 1
OK
ledis 127.0.0.1:6380> get a
"1"
//use curl
curl http://127.0.0.1:11181/SET/hello/world
→ {"SET":[true,"OK"]}
curl http://127.0.0.1:11181/0/GET/hello?type=json
→ {"GET":"world"}
import "github.com/siddontang/ledisdb/ledis"
l, _ := ledis.Open(cfg)
db, _ := l.Select(0)
db.Set(key, value)
db.Get(key)
Set slaveof in config or dynamiclly
ledis-cli -p 6381
ledis 127.0.0.1:6381> slaveof 127.0.0.1 6380
OK
See benchmark for more.
See Issues todo
See Clients to find or contribute LedisDB client.
- You must known that changing store database runtime is very dangerous, LedisDB will not guarantee the data validation if you do it.
- Begin a transaction will block any other write operators before you call
commit
orrollback
. Don't use long-time transaction. pcall
andxpcall
are not supported in lua, you can see the readme in golua.
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