cassandra in industry

Cassandra In IndustryNiall Milton, CTO, DigBigData

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1. What is Apache Cassandra?2. Who uses Apache Cassandra?3. Real Use Cases4. Questions

Overview

© DigBigData 2014

© DigBigData 2014 3

Massively scalable open source NoSQL database

Dynamic SQL-like data modeling and querying

Master-less architecture, no SPOF Linear scalability, high availability / reliability Tuneable consistency New Core Value : Ease of Use!

What is Apache Cassandra?


Who Uses Apache Cassandra?


And…


Java .NET Python Ruby & PHP on the way Feeling Energetic? Use native protocol to roll

your own client.

Drivers…


33 million members in 40 countries Almost 100% deployed in Amazon Cloud Biggest single source of internet traffic in terms of

volume More than 1 billion videos delivered each month Core data services served from Cassandra since

2010 100s of nodes split into isolated clusters per service Managed and Deployed via Netflix OSS

Use Case : NetflixThe Business


Low Latency & latency variance Linear scaling of reads and writes Each cluster uses nodes from different availability

zones Ring is self repairing after outages Supports node backups & snapshots They found CL One suited their needs for most use

cases They run massive simulations in Amazon to test their

assumptions re. latency, data growth etc.

Use Case : NetflixWhy Cassandra?


75 billion dollars in goods sold per year 112 million ACTIVE users 400+ million items for sale Billions of page views / day Running 1000s of servers Processing TB per second We get it, Ebay is big!

Use Case : EBayThe Business


Mixed Data Architecture, also using Mysql, Oracle, MongoDB & Hadoop

Over 100 cassandra nodes deployed with 9 billion writes / day & 5 billion reads / day

Ethos is to use the right tool for a particular job.

Cassandra is good for sparse data, big data, flexible schemas & real-time analytics

Many use cases don’t require RDBMS

Use Case : EBayArchitecture


Multi-DC, active-active configuration. Less waste, no dark nodes. Always available Easily scaled up and down High write throughput Distributed counters Hadoop support

Use Case : EBayWhy Cassandra?


Time series data, real time insights and immediate actions Anti-fraud Order and shipping insights

Server metrics collection for monitoring and alerting

Personalization & taste graphingRuntime quality click pricing for affiliatesMobile notification logging and tracking

Use Case : EBayBut what does it do?


World’s highest rated taxi app Over 500,000 registered passengers Hailo e-hail is accepted every 4 seconds

globally Operating in 10 cities after just 18 months of

operation (as of 2013) Processes over 100million dollars in

customer & driver transactions.

Use Case : HailoThe Business


Historically using MySQL in AWS Rapid global expansion required higher scalability Global replication desired Growth forecasts indicated high growth rate.

Cassandra easily scaled to meet this demand Some prior engineering experience and

confidence in the technology Using Acunu for some analytics work. It uses

Cassandra under the hood.

Use Case : HailoWhy Cassandra?


Numerous examples of companies adopting Cassandra to answer the demands of high volume workloads

Easily supports mixed workloads and is highly tuneable to favour read, write or both

Supports rapid service rollouts (Netflix have built an entire development culture around this)

Where ease of scale, flexible schema design, high availability and hurricane survival are required Cassandra meets the need.

Conclusion


Questions?


Questions?

?

cassandra in industry

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