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Ruby On Rails Sydney Meetup - Performance Tips For Apps
This document presents performance tips for applications, covering monitoring, asynchronous tasks, caching, and scaling strategies. It highlights various techniques for identifying performance issues, optimizing database operations, and utilizing caching methods, along with further resources for reading. Key topics include response time monitoring, memory usage, and leveraging services for improved application efficiency.
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Ruby On Rails Sydney Meetup - Performance Tips For Apps
- 1. Performance Tips For Apps
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- 3. Performance Is Important Oops! ● Myer Boxing Day 2013 ● Click Frenzy 2012
- 4. Some Common Problems Note: not an exhaustive list
- 5. What I’ll Cover ● Monitoring ● Asynchronous Tasks ● Caching ● Scaling ● Database +
- 6. Monitoring How toknow there is a performance problem? + Response time, rpm, memory usage, CPU usage, error rates
- 7. Monitoring What elsecan I do? ● Logs ● Memory Usage ● Performance tests ● Health Checks ● More call centre phone calls
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- 9. Caching How? ●Cache store ● Fragment caching ● SQL caching Removed in Rails4: Action Caching & Fragment Caching
- 10. Caching Problem: Pagemaking long running/many external requests Before: No Caching After: With Caching!
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- 13. Database ● Addan index ● Profiling ● Batch queries ● Eager fetching ● Denormalisation ● Sharding
- 14. Other Techniques ●Queuing/Background Jobs ● Caching tech (e.g. Elasticache) ● Dedicated services ● Rails engines ● C-extensions (gems) ● Sprites ● Asset pipeline ● Cache control headers ● Gzip assets* ● Less HTTP requests ● Dedicated Search Service ● Remove unused assets ● Static cluster ● AWS Auto-scaling ● Akamai, Cloudfront (edge caching) ● YSlow ● Local Storage ● Smaller Responses ● Async JS ● Chrome DevTools ● Ruby Flavours e.g. JRuby
- 15. Further Reading https://github.com/ianheggie/health_check http://guides.rubyonrails.org/caching_with_rails.html http://railscasts.com/episodes/380-memcached-dalli https://developers.google.com/events/io/sessions/324511365 http://railscasts.com/episodes/366-sidekiq http://www.slideshare.net/derekmbrown/netflix-strategic-performance- analysis http://blog.jphpsf.com/2012/04/28/front-end-performance-case-study- github
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