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Intro
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Philadelphia Emerging Technology For The ENTERPRISE
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Aaron Patterson @tenderlove
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Rails Core Team
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enterprise gem
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Expense Reports
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Rube Goldberg Expense Reporting System
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Interfaces & Adapters
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Exploring the internals of Active Record
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I love my cat!
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Disrupt Space
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Disrupt the Space of Space Disruption
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SEO Optimization
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Leif Erikson (Later invented Cell Phones)
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Release Date: September 2012
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Problems.
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Too Many Open Questions.
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minitest/spec
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Action Controller::Live
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Streaming / Polling (with timeout)
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Pitfalls
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Webserver
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Long Responses
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Client Disconnect
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Use Polling
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Where is the bottleneck?
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Time Breakdown
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How do the test tasks work?
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You app can have custom Rake tasks lib/tasks
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Multiple Loads
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Challenges
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Switching Environments
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Your app is a singleton
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Change the env before app load
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loading schema.rb
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Real Solution: Remove Singleton
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Connection Pooling
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Pool limit =~ Server threads
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Threads Pool Size is Just FineTM
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Thread Safety
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Is XXX Library Thread Safe?
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Everything is Thread Safe, if you know the rules.
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DB Connections ARE NOT Thread Safe
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No locks around socket operations
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AR Objects ARE NOT Thread Safe
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No locks around read / write ops
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Underlying DS is a hash with no locks
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Split Work by Type
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SQL Construction
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Statement Cache
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Query Cache: Same Statement Same Results
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Saves Parse Time
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Saves Bandwidth
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Memory Increase
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Cache Size Limit
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Cache all invariants
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Mamba Time
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Health Walk.
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Questions?
Description:
Explore the internals of Active Record in this 58-minute conference talk from Aaron Patterson at Philly ETE 2013. Dive deep into Rails core concepts, enterprise gem development, and the intricacies of Active Record. Learn about interfaces, adapters, and the challenges of building efficient database connections. Discover insights on thread safety, connection pooling, and optimizing SQL performance through statement caching. Gain valuable knowledge on improving your Rails applications' performance and understanding the inner workings of Active Record.

Exploring the Internals of Active Record

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#Programming #Programming Languages #Ruby #Ruby on Rails #Computer Science #Database Management #Database Optimization #Concurrency #Thread Safety
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Intro