Simple use of Redis module RediSearch

Note: The installed Redis server must be version 4.0 or above, check it through the info command

127.0.0.1:6379> INFO
redis_version:4.0.2

1. Install 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

2. Start the service

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

Can be loaded dynamically

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

Configuration file loading:

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

Restart the server

sudo systemctl restart redis

3. Use

(1) Create an index using fields and weights (Default weight is 1.0)

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

(2) Add the document to the index

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

(3) Search Index

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"

Note: Input is expected to be valid utf-8 or ascii . Currently the engine cannot handle wide character unicode.

(4) Delete index

127.0.0.1:6379> FT.DROP myIdx
OK

(5) Add and get auto-complete suggestions

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

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

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