Case study example of migrating from mysql to redis for high volume consumer mobile application.

1. High Volume Consumer Mobile
Application Using Redis on AWS
Presentation to Tech Meetup
George Nassef
Chief Technology Officer

2. Previous Architecture
 Multiple MySQL Clusters on AWS Instances
 Geo-Distributed For Low-Latency
 Load-balanced RO MySQL Instances Using
Replication.
 Cached Videos Using ElasticCache CDN.
 MySQL Replication for Speed.

3. Problems
 MySQL Replication is Cumbersome
 Management of Multiple RO MySQL, No Fun.
 Code Complexity and Management.
 Cache Expiration and Object Permanence.
 Scaling User-Authentication Special Case.

4. Solution
 Migrated Heavy Hit Data to Redis
 Setup Redis Clusters for Performance Fail-over.
 Code simplification was dramatic.
 Nearly All MySQL was able to be retired.
 Kept MySQL Insert (1-time) for persistent data.
 Kept keyed Redis entries for subsequent Reads.

5. Benefits
 150x performance improvement.
 Able to reduce AWS footprint, save $$$$.
 Switched to Spot Instances for Redis Slaves.
 Saved more $$$$.
 Faster Mobile Consumer Experience.
 Able to geo-distribute worker servers for even better
speed.
 Smaller Code Footprint, faster development.