Redis模块学习笔记（一）RediSearch简单使用

说明：安装的Redis服务器必须为 4.0 以上版本，通过info命令查看

127.0.0.1:6379> INFO
redis_version:4.0.2

一、安装 RediSearch

git clone https://github.com/RedisLabsModules/RediSearch.git
cd RediSearch/src
make all

# Assuming you have a redis build from the unstable branch:
/path/to/redis-server --loadmodule ./redisearch.so

二、启动服务

www@TinywanAliYun:/usr/local/redis4.0/etc$ /usr/local/redis4.0/bin/redis-server --loadmodule /home/www/build/RediSearch/src/redisearch.so
22886:C 15 Nov 16:54:07.255 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
22886:C 15 Nov 16:54:07.255 # Redis version=4.0.2, bits=64, commit=00000000, modified=0, pid=22886, just started
22886:C 15 Nov 16:54:07.255 # Configuration loaded
22886:M 15 Nov 16:54:07.256 # Creating Server TCP listening socket *:6379: bind: Address already in use

可以动态加载

www@TinywanAliYun:/usr/local/redis4.0/etc$ redis-cli 
127.0.0.1:6379> MODULE LOAD /home/www/build/RediSearch/src/redisearch.so

配置文件加载：

vi /usr/local/redis4.0/etc/redis.conf
#文件底部加入
loadmodule /home/www/build/RediSearch/src/redisearch.so

重启服务器

sudo systemctl restart redis

三、使用

（1）使用字段和权重创建索引（默认权重为1.0）

127.0.0.1:6379> FT.CREATE myIdx SCHEMA title TEXT WEIGHT 5.0 body TEXT url TEXT
OK 

（2）将文档添加到索引

127.0.0.1:6379> FT.ADD myIdx doc1 1.0 FIELDS title "hello world" body "lorem ipsum" url "http://redis.io" 
OK

（3）搜索索引

127.0.0.1:6379> FT.SEARCH myIdx "hello world" LIMIT 0 10
1) (integer) 1
2) "doc1"
3) 1) "title"
   2) "hello world"
   3) "body"
   4) "lorem ipsum"
   5) "url"
   6) "http://redis.io"

注意：输入预计是有效的utf-8或ascii。目前引擎无法处理宽字符unicode。

（4）删除索引

127.0.0.1:6379> FT.DROP myIdx
OK

（5）添加和获取自动完成建议

127.0.0.1:6379> FT.SUGADD autocomplete "hello world" 100
OK

127.0.0.1:6379> FT.SUGGET autocomplete "he"
1) "hello world"