Speeding Couch
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This document discusses ways to speed up CouchDB, including using bulk operations for insert and delete, using intelligent sequential IDs to optimize storage and indexing, lowering the number of emit functions in map views, and considering data structure and alternatives like MySQL or MongoDB for certain use cases. The document provides examples of implementing sequential IDs and updating views in CouchDB. It recommends experimenting with optimizations like view updating, data structure, and database alternatives.
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Speeding Couch
- 1. Couch Speeding speed up your couchdb Taylor Luk idealian
- 2. CouchDB • CouchDb is a document-oriented database • RESTFul • JSON data format • Map/Reduce • Schema-free
- 3. Case Study • Build is a analytic and tracking library that i have build to to do custom tracking for couple projects i am working on..
- 4. CouchDB looks good • It's restful "how about logging and tracking from both client side and server side." • Schema free "So i can track all kind of actions with different kind of meta data.Video playback, View, Click, Enter and exit" • Speed
- 5. Not quite... • Higher latency • Slow insert performance • Slow view query index • Large storage requirement • Updating and locking issues
- 6. Speed up CouchDB - Bulk operations • Bulk operations for insert and delete CouchRest mydb.builk_save({ doc1, doc2 })
- 7. Speed up CouchDB - Intelligent Sequential ID • Optimize B-Tree storage • Lower record size • Free timestamps and index # Couch ID "_id":"012471a4cb6124ba54dd49204b41c46e" #Generate timestamp (Time.now.to_f *1000).to_i.to_s(16)
- 8. Speed up CouchDB - Intelligent Sequential ID "_id":"012471a4cb6124ba54dd49204b41c46e" # Ruby def created_at Time.at(self.id[0, 11].to_i(10) / 1000) end #Javascript var timestamp = parseInt(object._id.substring(0,11), 16); var date = new Date(timestamp);
- 9. Speed up CouchDB - View and updates • View updating is slow (initial) • Lower the number of emit() in your map function • Trade storage for speed • Aggregation and Summerized records
- 10. Speed up CouchDB - useful tips and bits • CouchDB v0.10 - faster insert performance • Compaction helps data storage size • think about your data structure • experimentation* Alternitive - MySQL myisam is decent for data warehousing - Relational database for transactions ($) - MongoDB for analytic
- 11. Thank you • email: taylor.luk@idealian.net • github: speedmax • twitter : @taylor_luk • blog : www.taylorluk.com