Redis for fun and profit

A simple overview of redis

Transcript

1. Redis
   matt george 8/25/2012
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2. @binarydud
   http://github.com/binarydud/redis-fun
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3. Redis is not ...
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4. Redis is not ...
   a replacement for your database.
   or necessarily fault tolerant.
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5. WTF
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6. what is it?
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7. Key-Value Store
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8. Key-Value Store
   Data Structure Server
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9. why?
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10. if you...
    need key value store that’s very fast.
    have a dataset that can fit into ram.
    are ok if not everything survives.
    Redis is very interesting!
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11. Data structure basics
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12. Strings
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13. String Basics
    SET key value
    GET key
    SETEX key seconds value
    APPEND key value
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14. redis>get hello
    (nil)
    redis> set hello world
    OK
    redis>get hello
    “world”
    String Basics
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15. String Basics
    INCR key
    DECR key
    INCRBY key value
    DECRBY key value
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16. String Basics
    redis>incr stat1
    1
    redis> incrby stat1 2
    3
    redis> decr stat1
    2
    redis> get stat1
    2
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17. String Patterns
    session handling
    caching
    counter/stats
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18. Lists
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19. Lists
    LPUSH key value
    (B)LPOP key
    LRANGE key start stop
    LLEN key
    LSET key index value
    LINDEX key index
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20. List Patterns
    stacks
    queues
    message passing
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21. Sets
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22. Sets
    SADD key member
    SREM key member
    SISMEMBER key member
    SMEMBERS key
    SCARD key
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23. Hashes
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24. Hashes
    HSET key field value
    HDEL key field
    HKEYS keys
    HLEN key
    HGETALL key
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25. Other Interesting Commands
    KEYS pattern
    DEL key
    RENAME key newkey
    EXISTS key
    EXPIRE key
    PERSIST key
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26. Pub/Sub
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27. Pub/Sub
    SUBSCRIBE channel ...
    UNSUBSCRIBE channel ...
    PUBLISH channel message
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28. Administration
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29. Persistence
    AOF
    Snapshots
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30. Replication
    master/slave
    slave chaining
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31. Server Commands
    redis> BGREWRITEAOF
    redis> BGSAVE
    redis> DBSIZE
    redis> INFO
    redis> FLUSHALL
    redis> SLAVEOF host port
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32. Benchmarks
    SET: 47709.93 requests per second
    GET: 49900.20 requests per second
    INCR: 47801.15 requests per second
    LPUSH: 49188.39 requests per second
    LPOP: 48355.90 requests per second
    SADD: 46970.41 requests per second
    SPOP: 50581.69 requests per second
    LPUSH: 47755.49 requests per second
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33. Demo Time
    aka, watch Matt flail in the command line
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34. Caveats
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35. Questions?
    http://redis.io
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