Riak at Wooga_Riak Meetup Sept 2013
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Riak at Wooga_Riak Meetup Sept 2013

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Riak at Wooga_Riak Meetup Sept 2013 Riak at Wooga_Riak Meetup Sept 2013 Presentation Transcript

  • Riak & Wooga by Guillermo Álvarez @guillermooo
  • Wooga
  • API Key Value Store + extras
  • Security Auth
  • Sinatra
  • Chef + Amazon
  • Riak
  • eLevelDB 5 nodes x m1.xlarge 15 GB, 2 cores, 2 units
  • Ring Size 1024
  • Benchmark 5 MDAU = 225K rpm
  • ( CPU )
  • HA/PROXY APP SERVERS RIAK + MEMCACHED
  • MEMCACHED 95% PUTS 5% GETS 99% HITS
  • Benchmark Again
  • Launch week Now
  • Monitoring
  • Alerting
  • Problems we have
  • Riak Ring Size
  • OOM cluster death
  • 1 Node dies 0 people realize
  • Summary ●  You should take care with your ring size ●  You must do monitoring ●  Reliable
  • Riak for Pearl’s Peril Daniel Doubleday http://de.linkedin.com/pub/daniel-doubleday/1/115/195/
  • Pearl Who?
  • Architecture Riak 1 Riak n App Server 1 HAProxy App Server n HAProxy Load Balancer 1 Load Balancer n
  • Data Model User stored as one JSON-CLOB ✘  Every client request needs to read / write average 4k data ✘  Needs concurrency control ✔ Ensures data consistency ✔ Reduces round trips ✔ Reduces number of keys
  • Data Set Total : ~ 15M Keys New : ~ 50k / Day Updates : ~ 100M / Day Requests : 100 - 200k rpm Per Server : ~ 75k rpm RW-Ratio : 50% / 50%
  • Cluster Info Hardware Bare Metal, 32GB 6 x 8-core AMD Opteron 2.6GHz 2 x 12-core Intel Xeon 2.0GHz Riak Version : 1.3.2 Storage : Bitcask
  • Storage Backend Bitcask ●  Higher Throughput ●  Predictable Read and Write Performance LevelDB ●  Compression ●  Supports large number of keys
  • The Good
  • A Typical Day
  • Adding a Node
  • The Bad
  • Performance Degradation
  • Nodes doing … things
  • The Ugly
  • Cluster Failures
  • Conclusions ●  It works ... ●  … most of the time ●  NoSQL is becoming commodity ●  There’s no shame in using mysql