Redis -- Memory as the New Disk
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The document discusses how memory is becoming the new disk for data storage due to its faster random access speeds and lower latency compared to hard disks, with examples showing how Redis is a simple and flexible in-memory data structure store that can provide fast performance for common use cases. Key advantages of Redis that are highlighted include its small codebase, support for different data structures and atomic operations, virtual memory handling, replication, and wide client library support in different programming languages.
![clients
- redis-cli, telnet
- c, c#
- ruby, python, perl
- java, scala
- php
- [many more ...]](https://image.slidesharecdn.com/redisnosqleu-100421101910-phpapp01/85/Redis-Memory-as-the-New-Disk-23-320.jpg)
Redis -- Memory as the New Disk
- 1. memory as the new disk
- 2. ☞redis tim lossen @nosqleu
- 3. “memory is the new disk, disk is the new tape” — jim gray
- 4. strengths harddisk - durability - capacity - sequential access (= “tape”) memory - random access - low latency
- 5. relative latency register 0.1 cache 1 memory 10 harddisk 1.000.000 “latency trumps all” — chris saari
- 6. relative latency register 0.1 cache 1 memory 10 harddisk 1.000.000 “latency trumps all” — chris saari
- 8. berlin - london easyjet 1 hour
- 9. berlin - london f-16 6 minutes easyjet 1 hour
- 10. berlin - london f-16 6 minutes easyjet 1 hour eurostar 10 hours
- 11. berlin - london f-16 6 minutes easyjet 1 hour eurostar 10 hours broken car 114 years
- 14. redis flickr.com/photos/atzu/2645776918
- 15. benchmark 4897 GET/s 5128 SET/s code.google.com/p/redis/wiki/Benchmarks
- 17. sheeva plug flickr.com/photos/mbiddulph/3836727468
- 19. features data structures - integers, strings - lists, sets, hashes - channels atomic operations - get, set, increment - push, pop ...
- 20. features virtual memory - keys always in memory - values swapped in as needed durability - append-only log file - background snapshots replication
- 21. implementation - 10k lines of pure ansi c poetry - no erlang, no javascript, no xml, no map-reduce, no hash rings, no merkle trees, no paxos, no vector clocks, no gossip protocol, no auto scaling, no friggin magic
- 23. clients - redis-cli, telnet - c, c# - ruby, python, perl - java, scala - php - [many more ...]
- 24. summary - don’t cross the red line - avoid magic - redis is simple & very flexible
- 25. summary - don’t cross the red line - avoid magic - redis is simple & very flexible - ..... and pretty fast as well☺
- 26. q&a
- 27. thanx! ❦ @tlossen
- 29. one-minute install > wget redis.tgz > tar xzf redis.tgz > cd redis > make > ./redis-server