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Scalability vs. Performance
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Creating scalable web sites that can handle many simultaneous requests and still provide fast experience for each user is hard. Historically, the industry was not differentiating Scalability and Performance, but with emergence of front-end engineering, new field of Web Performance Optimization was born and it became critical to approach them separately. Sergey Chernyshev will compare these two directions of web engineering and describe the differences between them, he will also cover current performance trends and describe different approaches to take in order to measure and analyze Web Performance in comparison to traditional methods that are successfully used to test scalability of web systems.
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Scalability vs. Performance
- Size & Speed Scalability vs. Performance NY Web Performance Meetup March 27, 2013
- About • Doing web dev and operations since 1996 • Tech Director, Web Ops and Dev @ truTV/Turner • Creator of ShowSlow • Organizer at NY WebPerf • Board member of WPO Foundation
- Why Do We Scale?
- Available Resources CPU Memory Disk Network
- CPU & Memory • Classical scale problem • Scale up (Moor's law) • Scale out (cloud)
- Storage • More available • Speed and reliability • Slower then in the past / SSD
- Network ??? • Easy to scale for static assets • Trouble if you hit dynamic
- User Experience
- How Page Loads ~8 sec above the fold ~0.5 sec for first request only 6.25% on back end 12sec, 157 req, ~1Mb http://bit.ly/pageload-video http://bit.ly/pageload-filmstrip
- Our Tools
- Load Testing apply load, measure backend performance degradation
- "Synthetic" testing time ALL components of page load HAR
- Real User Measurement measure key performance metrics for REAL users Boomerang.js
- Speed, is it important? RUM data. Aaron Kulick, Cliff Crocker @ Wallmart Labs
- Speed, it is important! RUM data. Aaron Kulick, Cliff Crocker @ Wallmart Labs
- Speed it up for one user!
- New York Web Performance Meetup Sergey Chernyshev @sergeyche @perfplanet
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