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This document discusses Cassandra and the Datastax Academy. It provides examples of companies using Cassandra as infrastructure including ING, Netflix, Sony, and Microsoft. It also discusses the increasing SQL support in Cassandra, such as user defined functions, materialized views, and secondary indexes. The document notes that skills in Cassandra are in high demand but difficult to find. It promotes the Datastax Academy as a free solution to this problem, offering self-paced courses, instructor-led training, and O'Reilly certification to boost careers.
![Increasing SQL-like features
• User Defined Functions
CREATE [OR REPLACE] FUNCTION [IF NOT EXISTS] keyspace';'function-name ( <arg-name> <arg-type> )
(CALLED | RETURNS NULL) ON NULL INPUT
RETURNS <type>
LANGUAGE <language>
AS <body>
© 2015 DataStax, All Rights Reserved.
6](https://image.slidesharecdn.com/datastaxacademy-151111133607-lva1-app6892/85/Data-stax-academy-6-320.jpg)
![Increasing SQL-like features
• Materialized Views
CREATE MATERIALIZED VIEW [IF NOT EXISTS] keyspace_name.view_name AS
SELECT column1, column2, ...
FROM keyspace_name.table_name
WHERE column1 IS NOT NULL AND column2 IS NOT NULL ...
PRIMARY KEY(column1, column2, ...)
• Real time notifications (CDC) CASSANDRA-8844
© 2015 DataStax, All Rights Reserved.
7](https://image.slidesharecdn.com/datastaxacademy-151111133607-lva1-app6892/85/Data-stax-academy-7-320.jpg)
Data stax academy
- 1. Datastax Academy: What ? Why ? How ? DuyHai DOAN
- 2. Cassandra as Infrastructure Technology • ING (Cassandra as a service) • Netflix • Sony Playstation Network • Microsoft Office 365 • Ebay (40Tb in a single table …) • Etc .. © 2015 DataStax, All Rights Reserved. 2
- 3. Cassandra as Infrastructure Technology • The SMACK stack as an alternative to the Hadoop stack for streaming • Spark • Mesos • Akka • Cassandra • Kafka • Read @helenaedelson slides here http://goo.gl/cCIE7F © 2015 DataStax, All Rights Reserved. 3
- 4. Rich eco-system around Cassandra • Apache Spark (C* connector) • Apache Zeppelin (C* interpreter) • Apache Mesos (https://github.com/mesosphere/cassandra-mesos) • Apache Kafka (KIP-30) • Apache Shiro (C* as cluster session store) • Hunk, JasperSoft, Pentaho, Tableau .. © 2015 DataStax, All Rights Reserved. 4
- 5. Increasing SQL-like features • CQL DML (SELECT, INSERT, UPDATE, DELETE …) • CQL DDL CREATE/ALTER/DROP (SCHEMA, TABLE, TYPE, FUNCTION …) • CQL Credentials • CREATE/ALTER/DROP (USER, ROLE) • GRANT <xxx> PERMISSION ON <resource> TO <user_name> • REVOKE <xxx> PERMISSION ON <resource> FROM <user_name> © 2015 DataStax, All Rights Reserved. 5
- 6. Increasing SQL-like features • User Defined Functions CREATE [OR REPLACE] FUNCTION [IF NOT EXISTS] keyspace';'function-name ( <arg-name> <arg-type> ) (CALLED | RETURNS NULL) ON NULL INPUT RETURNS <type> LANGUAGE <language> AS <body> © 2015 DataStax, All Rights Reserved. 6
- 7. Increasing SQL-like features • Materialized Views CREATE MATERIALIZED VIEW [IF NOT EXISTS] keyspace_name.view_name AS SELECT column1, column2, ... FROM keyspace_name.table_name WHERE column1 IS NOT NULL AND column2 IS NOT NULL ... PRIMARY KEY(column1, column2, ...) • Real time notifications (CDC) CASSANDRA-8844 © 2015 DataStax, All Rights Reserved. 7
- 8. More powerful search in future • Apple open-sourced Secondary Index Impl • https://github.com/xedin/sasi CREATE CUSTOM INDEX ON sasi (bio) USING 'org.apache.cassandra.db.index.SSTableAttachedSecondaryIndex' WITH OPTIONS = { 'analyzer_class': 'org.apache.cassandra.db.index.sasi.analyzer.StandardAnalyzer', 'tokenization_enable_stemming': 'true', 'analyzed': 'true', 'tokenization_normalize_lowercase': 'true', 'tokenization_locale': 'en' }; © 2015 DataStax, All Rights Reserved. 8
- 9. More powerful search in future • Apple open-sourced Secondary Index Impl • https://github.com/xedin/sasi SELECT * FROM sasi WHERE (created_at > 1442959315018 OR first_name = 'P') AND age > 26 ALLOW FILTERING; © 2015 DataStax, All Rights Reserved. 9
- 10. More powerful search in future • Limited to 2.0.x branch • Needs special patch to OSS code • Support only COMPACT STORAGE table • Only compatible with Murmur3Partitioner • CASSANDRA-10661 to merge to Cassandra 3.0 !!! • Github issues to support full CQL3 (https://github.com/xedin/sasi/issues/3) © 2015 DataStax, All Rights Reserved. 10
- 11. Datastax Gartner reports (Operational DB) © 2015 DataStax, All Rights Reserved. 11 Oct 2013
- 12. Datastax Gartner reports (Operational DB) © 2015 DataStax, All Rights Reserved. 12 Oct 2014
- 13. Datastax Gartner reports (Operational DB) © 2015 DataStax, All Rights Reserved. 13 Oct 2015
- 14. Cassandra Job Trend © 2015 DataStax, All Rights Reserved. 14
- 15. Cassandra Job Offers (I’ve received) © 2015 DataStax, All Rights Reserved. 15
- 16. Cassandra Job Offers (I’ve received) © 2015 DataStax, All Rights Reserved. 16
- 17. Problem ? © 2015 DataStax, All Rights Reserved. 17 • Lack of Cassandra skills • Difficulty to hire Cassandra experts
- 18. Solution: https://academy.datastax.com © 2015 DataStax, All Rights Reserved. 18
- 19. Self-Paced Courses 19 © 2015 DataStax, All Rights Reserved. FREE
- 20. Instructor-Led Training 20 © 2015 DataStax, All Rights Reserved. FREE
- 21. O’Reilly Certification 21 © 2015 DataStax, All Rights Reserved.
- 22. Technical Evangelists 22 © 2015 DataStax, All Rights Reserved. • On-site help, data-modeling, cluster health check • duy_hai.doan@datastax.com, @doanduyhai FREE
- 23. From Devs & Ops perspective 23 © 2015 DataStax, All Rights Reserved. Cassandra is mainstream + You are trained & certified = Career Boost
- 24. 24 © 2015 DataStax, All Rights Reserved. academy.datastax.com