Redis - little helper for big applications (rus)

Slides from my talk on sixth devclub meetup

Transcript

1. маленький помощник больших приложений Андрей Савченко Aejis
2. Что такое Redis? Key-value хранилище Publish-subscribe сервер
3. Особенности Высокая скорость Персистентность данных Транзакции, репликация
4. Типы данных Строка (String) Хеш (Hash) Список (List) Множество (Set) Упорядоченное множество (Sorted set)
5. Клиенты ActionScript, C, C#, C++, Clojure, Common Lisp, Erlang, Go, Haskell, haXe, Io, Java, Lua, Node.js, Objective-C, Perl, PHP, Python, Ruby, Scala, Smalltalk, Tcl
6. Cтроки SET testkey “Hello” GET testkey MSET key1 “Hello” key2 “world” SET counter 1 INCR counter GET counter #=> “2”
7. Xеши HSET test key1 “Hello” HSET test key2 “World” HGET test key2 #=> “World” HGETALL test #=> “key1” “Hello” “key2” “World”
8. Списки RPUSH test “zero” RPUSH test “one” RPUSH test “two” LRANGE test 1 2 #=> “one” “two”
9. Множества SADD users “andrey” SADD users “dima” SCARD users #=> 2 SISMEMBER users “andrey” #=> 1 SISMEMBER users “gleb” #=> 0
10. Практическое применение
11. Кеши, сессии Инвалидация по времени SET a18f045 “cache content” EXPIRE a18f045 100
12. Кеши, сессии Инвалидация по признаку SET a18b045 “cache content” SET d98f0c9 “cache content” SADD cond1 a18b045 SADD cond1 d98f0c9 SMEMBERS cond1 DEL {result of smembers}
13. Хранение несвязанных (малосвязанных) данных {user_id = 1} HSET settings:1 receive_emails “1” HSET settings:1 records_per_page “20” HSET settings:1 preffered_syntax “markdown” HGETALL settings:1
14. Сбор статистики {post_id=42} INCR posts:42 GET posts:42 # How many views/votes? ZINCRBY posts 1 42 ZSCORE posts 42 # How many views/votes? ZREVRANGE posts O 9 # TOP-10 posts ZREVRANGE posts O 9 WITHSCORES # TOP-10 with views/votes quantity
15. Связь между демонами Web-application Websocket server Async jobs server
16. Связь между демонами # Websocket server: SUBSCRIBE messages # Async jobs server: SUBSCRIBE jobs # Web-application: PUBLISH jobs “videos:12:mpeg:ogg” PUBLISH messages “Video encoding #12 started” # Async jobs server: PUBLISH messages “Video encoding #12 finished”
17. Построение простых графов # User 1 adds user 5 to friends SADD users:1:friends 5 SADD users:5:friend_of 1 ... # Get user 5 friends SMEMBERS users:5:friends # Get user 5 mutual friends SCARD users:5:friends users:5:friend_of # Get common friens of user 5 and 7 SCARD users:5:friends users:7:friends # Are user 7 friend of user 5? SISMEMBER users:5:friends 7
18. Вопросы? andrey@aejis.eu twitter.com/ptico redis.io/commands