[io PWA] Great libraries and tools for great Progressive Web Apps

本文介绍了Service Worker中几种常见的缓存策略,包括使用sw-toolbox实现的cache-first和network-first策略,以及它们如何帮助提高应用性能。
  • sw-toolbox: Github
    •   It provides a cononical implementation of all the runtime caching strategies that you need for you dynamice content.
  • sw-precache: Github
    •   It takes care of caching and maintaing all the resources in your app shell
  • sw-helpers: Github
  • lighthouse: Github

 

 

sw-toolbox:

For the assets, you can use cache-first:

CacheFirst, will go to cache for fetching data, if there is then return the cache back, will not go to network for fetching data.

If cannot get the data from the cache, then fallback to network to get data.

toolbox.router.get(
    '/path/to/images/.*',
    toolbox.cacheFirst,
    {cache: {
        name: 'images',
        maxEnteries: 6  // cache at most 6 images
    }}
)

 

For highly dynamic data, can use network first: (Battle Lie-Fi)

NetworkFirst, will go network for fetching data, if get the data then return back.

If cannot get the data, then fallback to cache.

toolbox.router.get(
    '/posts/.*',
    toolbox.networkFist,
    {cache: {
        name: 'posts',
        maxEnteries: 500,
        maxAgeSeconds: 5 * 24 * 60 * 60
    },
   networkTimeoutSeconds: 3 // after three sconds, fallback to cache
  } )

 

Fastest: 

Race between cache and network:

 

 

 

转载于:https://www.cnblogs.com/Answer1215/p/5521609.html

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