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➲ Performance Optimization:

It is an important thing when comes into web application development. and it is noticeable issue for a large scale application. It is required to improve the speed of the process and optimizing the performance of overall application.

☴ Overview:

  1. Caching Techniques
  2. Code Optimization

✦ Caching Techniques:

It is used to store frequently accessed data in memory or on disk to reduce the need for repeated process or calculations or database queries.

The common caching techniques:

  • Output Caching:

    • It can caches the entire output of a script.
    • It is useful for both static content and pages that change infrequently.
    • PHP offers built-in caching mechanisms for output caching.

  • Page Caching:

    • It can caches the rendered HTML output of a page.
    • It can be implemented using built-in caching mechanisms or libraries.

  • Database Caching:

    • It caches database query results to reduce database load for repeated same queries.
    • It can be implemented by views in database or using third-party tools like Redis or Memcached.

  • Other Caching:

    • Use CDN (Content Delivery Network) can cache static assets to improve performance.
    • Prefer Browser Caching, by using HTTP headers to instruct browsers to cache static assets like CSS, JavaScript, and images.

✦ Code Optimization:

  • Efficient Algorithms and Data Structures:

    • It is necessary to choose appropriate and optimistic algorithms and data structures.
    • Prefer to use built-in functions and libraries than custom algorithm for common task such as sort, search, etc.

  • Minimize Database Load:

    • Prefer to use JOINs to reduce the number of queries.
    • Use caching mechanisms such as views or third-party tool to store frequently accessed data.
    • Optimize queries for better performance.

  • Optimize Loops:

    • Avoid unnecessary iterations and long loops.
    • Prefer to use more efficient loop constructs when possible
    • Use yield whenever possible construct loop.

  • Reduce HTTP Requests:

    • Try to combine multiple files into one to reduced HTTP requests.
    • Use CSS image sprites technique, where use CSS to use portion of image that has combination of all images.

  • Minimize HTTP Redirects:

    • Try to reduce the number of redirects to improve page load time.

  • Use Built-in Functions:

    • Use built-in functions for efficient array operations rather than using custom algorithm.

  • Minify and Compress Assets:

    • Minify CSS, and JavaScript files to reduce file size to load quicker in the page.
    • Compress files, such as images to reduce transfer time.

  • Follow PSR Standards:

    • Code Quality: PSR standards helps to write clean code that improves readability.
    • Community Adoption: Many popular PHP frameworks and libraries adhere to PSR.
    • Best Practices: It promotes coding style, error handling, and security standard.
    • Prefer to use active standards and avoid using deprecated, abandoned and draft.
    • Refer Official PSR Documentations or See more from PHP-FIG Site.

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