Introduction: This is a detailed page of several suggestions for improving the performance and scalability of Web websites. It introduces PHP, related knowledge, skills, experience, and some PHP source code.
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- Benchmark comparison (benchmarking );
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- Multiple application services;
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- Do not stay in the application service status;
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- Stateless;
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- Architecture Optimization;
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- Cache content with a high click rate;
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- Speak with measurement and detection data;
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- Static web page;
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- Weigh cache applications;
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- Cache the entire page;
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- Cache local pages;
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- Cache complex data;
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- Understand the MySQL Query Buffer;
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- Copy database table read operations. Do not copy and write operations;
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- Write operation partition table. But 96% of applications can ignore this;
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- The Master-master architecture makes it easier to update the database structure online;
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- Create a statistical database table instead of using count and group by queries at run time;
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- GuaranteeCodeIdempotence. If the Code fails to run, it can be recovered at any time;
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- Load data asynchronously and update data in batches;
- Do as much processing as possible in the application, rather than in the database;
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- Stored procedures are dangerous;
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- Enable log query;
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- Different workloads use different MySQL instances;
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- Configuration optimization help and query optimization;
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- Careful consideration of persistent database connections;
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- Do not over-use the database. It is difficult to expand the database;
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- Use parallel processing;
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- Records HTTP request logs;
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- Lightweight tasks use lightweight processes;
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- Establish an internal APIs for easy scaling;
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- Automatic Error handling;
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- Ensure that the service is always running;
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- Balancing is the key to horizontal scaling;
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- Redundancy is not a Server Load balancer, ensuring the load capacity of N + 1;
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- Prepare a disaster recovery plan;
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- Back up data;
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- Make sure the system is easy to deploy;
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- Everything can be done using scripts;
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- Monitor and map everything;
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- Each server runs a service;
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- Do not replace hard disks with memory;
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- Use memcached if the memory is sufficient );
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- Use more memory to save CPU and IO overhead;
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- Start the application service on the network;
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- Use charts to speak;
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- Use Content Delivery Network (CDN;
- Use yslow to locate client problems;
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