Ilya Grigorik - Founder / CTO [email_address]

The Problem - Information Overload

PostRank / Engagement Filtering [1] http://www.postrank.com

PostRank

Three Reasons for AWS It’s cheap 2. It’s elaaaaastic 3. It enables you to iterate quickly Architecture improvements Scratch space for one-off experiments Easy staging environments

It’s cheap

2. It’s elaaaaastic

3. It enables you to iterate quickly

Architecture improvements

Scratch space for one-off experiments

Easy staging environments

It’s Elaaaaastic - Our Launch Day Servers Feeds Stories 00:00 5 5K 20K 12:00 30 12K 85K 24:00 100 35K 440K Today ~100 500K 800K / day

Aide RSS Database S3 EC2 Ouch! Scheduler

Aide RSS Database SQS EC2 SQS Migrating to SQS - July: 500,000 messages - November: 2,500,000+ messages Budget, less than $100 Scheduler

Frontend servers (x 3) - Medium instance (IO/Memory) - App & Cache servers MySQL servers (x 6) - Medium instance (IO/Memory) - MySQL 5.1 w/ replication - Backup to S3 every 4 hours Index servers (x 2) - X-Large (CPU/IO) - EBS volumes for IO throughput - EBS snapshots for backup Infrastructure servers (x 3) - Dist. Logger (Medium – IO) - Analytics Server (Medium – IO) - Messaging Server (Small) Crawlers (x ~70) - Small instance (Network IO) - Automated build & boot Staging (x 3) - Medium / Small instances - Scratch space for internal use

Thank you http://www.aiderss.com http://www.postrank.com Ilya Grigorik - Founder / CTO Email: [email_address]