Yfrog uses HBase as its scalable database backend to store and serve 250 million photos from over 60 million monthly users across 4 HBase clusters ranging from 50TB to 1PB in size. The authors provide best practices for configuring and monitoring HBase, including using smaller commodity servers, tuning JVM garbage collection, monitoring metrics like thread usage and disk I/O, and implementing caching and replication for high performance and reliability. Following these practices has allowed Yfrog's HBase deployment to run smoothly and efficiently.

1. YFROG! Reliable, beautiful and fun to use messaging platform.

2. 10,000 Concurrent requests per second

3. Super fast!

4. Super Huge datastore – 2bl rows.

5. Backend is scalable

6. Does not lose data

7. Why? – HBASE is used for 99% of the backend

8. HBASE Best Practices or Taming the Beast Hbase at Imageshack: Started using Hbase 8 months ago

9. ImageShack: 25 ml monthly uniques