1. an introduction to
MEMBASE
@tlossen, 2010-08-05
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2. “simple, fast, elastic”
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3. overview
• key-value-store
• API-compatible to memcached
- same protocol / client libs
• ‘memcached with persistence’
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4. status
• developed by NorthScale & Zynga
• used in production (farmville)
• released in June 2010
- Apache 2.0 License
• current version is 1.6 beta 2
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5. cluster structure
• all nodes are alike
- one elected as “coordinator”
• each node is master for part of key
space
- handles all reads & writes
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6. sharding
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7. node
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8. storage
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9. replication
• each vbucket has configurable
number of replicas
• protects against node failure
- quick failover
• master sends updates to replicas
asynchronously
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10. elasticity
• can add nodes at any time
• can remove nodes at any time
- replicas are promoted to master
• rebalancing necessary
• no downtime!
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11. rebalancing
• initiated manually
• membase calculates new vbucket
map
• masters / replicas are migrated to
other nodes (as needed)
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12. deployment
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13. q&a
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14. links
• “Membase Unleashed”
- northscale.com/
products/resources.html
• membase.org
• github.com/northscale
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