#Cassandra2013

Dude, Where’s My Tweet? Taming the Twitter Firehose

Andrew Noonan Software Engineer at Gnip

@noonanisms

#Cassandra2013

Gnip

Cassandra

Rainbows

Unicorns

???  

#Cassandra2013

#Cassandra2013

Social Data

#Cassandra2013

90% of Fortune 500

120 Billion Activities Delivered Per Month

#Cassandra2013

Lots-O-Data

Redundancy & Reliability

Availability

#Cassandra2013

#Cassandra2013

High Write Throughput ✔

Scalable ✔

Highly Available ✔

Persistent ✔

#Cassandra2013

Right?

#Cassandra2013

Not Exactly…

#Cassandra2013

No Maintenance? Bad Idea

Begin Maintenance -> 2X Data Growth

Scalable, Right?

Bootstrap Failures Due To Cluster Load

#Cassandra2013

Reconsider (Life) Choices?

#Cassandra2013

Size Tiered Compaction vs Leveled Compaction

How Much Data To Store Per Node

Your Write Pattern Matters Too

#Cassandra2013

compaction_throughput_mb_per_sec

16-32X write rate?

Lots-o-options – explore them

#Cassandra2013

Lookup by Tweet ID

Read Rate < Write Rate

Dynamic ColumnFamilies

#Cassandra2013

For realz this time!?

#Cassandra2013

#Cassandra2013

Bloom Filter False Positive Rate

Index Intervals

Only Change Schema On One Node! (For Now)

#Cassandra2013

You Won’t Always Fit The Mold and That’s Okay

Explore Your Options No Matter What

Understand The Consequences Of Your Choices

Staging Environment Identical To Production

#Cassandra2013

www.gnip.com

@noonanisms