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The document discusses various techniques for scaling PHP applications, including: 1. Using load balancers to distribute traffic across multiple servers and ensure high availability. 2. Implementing session persistence to maintain user sessions as clients are load balanced. 3. Separating static and dynamic content to improve performance by serving static files from optimized servers. 4. Caching frequently accessed data and generated pages to reduce database queries. 5. Database replication and other techniques for scaling the application database infrastructure. 6. Code optimization methods like opcode caching and acceleration. 7. Design considerations like modularity when planning for scalability.

TechnologyBusiness
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Help! I need more servers! What do I do? Scaling a PHP application
[object Object],[object Object],[object Object],Introduction
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Presentation Overview
[object Object],[object Object],[object Object],Scalability
[object Object],Load Balancers
[object Object],Load Balancers More expensive More robust Processes traffic at hardware level Tech agnostic: works with any OS Hardware load balancer Most packages cannot handle large or complex networks Large amount of hardware Easy setup Flexible (more configuration options) Cheaper Software load balancer (eg: UltraMonkey) Cons Pros
[object Object],Session Persistence
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Session Persistence
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Session Persistence
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Server farms: Keeping servers in sync
[object Object],[object Object],[object Object],[object Object],[object Object],Server farms: Keeping servers in sync
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Static content separation
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Static content separation
[object Object],Static content separation
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Lighttpd benchmark
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Application database infrastructure
Application database infrastructure ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Application database infrastructure
Application database infrastructure ,[object Object]
Application database infrastructure ,[object Object]
Code acceleration ,[object Object],[object Object],[object Object]
Code acceleration ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Caching
[object Object],[object Object],[object Object],[object Object],Caching
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Caching
[object Object],[object Object],[object Object],Caching
Caching ,[object Object]
Caching ,[object Object],[object Object],[object Object]
PHP Code design considerations ,[object Object],[object Object],[object Object]
PHP Code design considerations ,[object Object],[object Object],[object Object],[object Object],[object Object]
Conclusion ,[object Object],[object Object]
Thank you! ,[object Object],[object Object],[object Object]

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