Redis Installation Configuration And Implementation
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This document provides instructions for installing and configuring Redis on Linux and Windows systems. It explains how to install Redis from source code or binary files, configure the Redis configuration file to customize settings like the server port, and run the Redis server and client programs. It also gives an overview of common Redis data types like strings, lists, hashes and sets, and provides code examples for working with Redis using different programming languages and clients.
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Redis Installation Configuration And Implementation
- 1. REDIS: INSTALLATION, CONFIGURATION & IMPLEMENTATION Everything and Anything I.T By Abhijeet Shekhar
- 2. Installation Linux: http://redis.io/download Windows 1. Clone from Git repo: https://github.com/MSOpenTech/redis 2. Unzip file from /redis/bin/release (e.g. redisbin64.zip) to /redis 3. Important files: ? /redis/redis-server.exe ? /redis/redis-cli.exe
- 3. Configuration ? Configuration file: /redis/redis.conf ? It is possible to change a port (if you wish): ? For development environment it is useful to change data persisting policy port 6379 save 900 1 save 300 10 save 60 10000 save 10 1 save after 10 sec if at least 1 key changed
- 4. Running Redis Server ? Run /redis/bin/redis-server.exe and specify configuration file to use redis>redis-server redis.conf
- 5. Running Redis Client ? Run /redis/bin/redis-cli.exe ? Now you can play with Redis a little bit
- 6. Useful Commands ? Print all keys: ? Remove all keys from all databases ? Synchronously save the dataset to disk KEYS * FLUSHALL SAVE
- 7. Redis keys ? Keys are binary safe - it is possible to use any binary sequence as a key ? The empty string is also a valid key ? Too long keys are not a good idea ? Too short keys are often also not a good idea ("u:1000:pwd" versus "user:1000:password") ? Nice idea is to use some kind of schema, like: "object-type:id:field"
- 8. Redis data types Redis is often referred to as a data structure server since keys can contain: ? Strings ? Lists ? Sets ? Hashes ? Sorted Sets
- 10. Redis Lists ? Lists of strings, sorted by insertion order ? Add elements to a Redis List pushing new elements on the head (on the left) or on the tail (on the right) of the list ? Max length: (2^32 - 1) elements ? Model a timeline in a social network, using LPUSH to add new elements, and using LRANGE in order to retrieve recent items ? Use LPUSH together with LTRIM to create a list that never exceeds a given number of elements
- 12. Redis Sorted Sets ? Every member of a Sorted Set is associated with score, that is used in order to take the sorted set ordered, from the smallest to the greatest score ? You can do a lot of tasks with great performance that are really hard to model in other kind of databases ? Probably the most advanced Redis data type
- 13. Redis Hashes ? Map between string fields and string values ? Perfect data type to represent objects HMSET user:1000 username abhi password 123 age 28 HGETALL user:1000 HSET user:1000 password 12345 HGETALL user:1000
- 14. Redis Operations It is possible to run atomic operations on data types: ? appending to a string ? incrementing the value in a hash ? pushing to a list ? computing set intersection, union and difference ? getting the member with highest ranking in a sorted set
- 15. Redis client ? PHPRedis ¨C PHP Client for Redis (https://github.com/nicolasff/phpredis) ? JRedis - Java Client for Redis ? Jedis - a blazingly small and sane Redis Java client ? Spring Data Redis
- 16. Configuration By Redis.conf port 6379 bind 127.0.0.1 maxclients 10000 maxmemory <bytes> By script $redis->config("GET", "*max-*-entries*"); $redis->config("SET", "dir", "/var/run/redis/dumps/");
- 17. PHP code <?php $redis = new Redis(); $redis->connect('127.0.0.1', 6379); $redis->set('key','value', 10); // Will set the key, if it doesn't exist, with a ttl of 10 seconds echo $redis->get(¡®key¡¯); ?>
- 18. Thanks ?