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Posted to issues@cordova.apache.org by GitBox <gi...@apache.org> on 2021/10/08 11:19:29 UTC
[GitHub] [cordova-docs] mfulton26 opened a new issue #1210: Cache storage documentation
mfulton26 opened a new issue #1210:
URL: https://github.com/apache/cordova-docs/issues/1210
# Feature Request
Details on advantages/disadvantages, supported platforms, etc. for the Cache API supported by browsers, etc.
## Motivation Behind Feature
<!-- Why should this feature be implemented? What problem does it solve? -->
Cordova has some great docs for helping when making decisions on where and how to store data but doesn't currently provide information saved about the Cache API which can be used in some cases instead of IndexedDB. Documenting this will help folks make informed decisions.
## Feature Description
<!--
Describe your feature request in detail
Please provide any code examples or screenshots of what this feature would look like
Are there any drawbacks? Will this break anything for existing users?
-->
Document Cache API similar to how localStorage, IndexedDb, Web SQL, etc. are documented.
www/docs/en/dev/cordova/storage/storage.md
## Alternatives or Workarounds
<!--
Describe alternatives or workarounds you are currently using
Are there ways to do this with existing functionality?
-->
Various sites out there have some information about total size limits on iOS, etc. etc. but it is hard to find what applies to apps running inside Cordova/WKWebView.
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[GitHub] [cordova-docs] mfulton26 commented on issue #1210: Cache storage documentation
Posted by GitBox <gi...@apache.org>.
mfulton26 commented on issue #1210:
URL: https://github.com/apache/cordova-docs/issues/1210#issuecomment-939183335
Yes, if it could be tested and documented that would be very helpful for reference. Especially for iOS.
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[GitHub] [cordova-docs] breautek commented on issue #1210: Cache storage documentation
Posted by GitBox <gi...@apache.org>.
breautek commented on issue #1210:
URL: https://github.com/apache/cordova-docs/issues/1210#issuecomment-938602848
Based on [MDN](https://developer.mozilla.org/en-US/docs/Web/API/Cache), it looks like the Cache API is a service worker feature. I'm pretty sure service workers are **not** supported by the underlying webviews. They are supported in the browser application themselves (e.g. Safari and Chrome) but not the WKWebView / Android System Webview counterpart in which the native apps have access to.
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[GitHub] [cordova-docs] mfulton26 commented on issue #1210: Cache storage documentation
Posted by GitBox <gi...@apache.org>.
mfulton26 commented on issue #1210:
URL: https://github.com/apache/cordova-docs/issues/1210#issuecomment-938609451
Although `caches` was introduced with service workers it is available on the `window` object similar to `indexedDb`.
https://developer.mozilla.org/en-US/docs/Web/API/Window
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[GitHub] [cordova-docs] breautek commented on issue #1210: Cache storage documentation
Posted by GitBox <gi...@apache.org>.
breautek commented on issue #1210:
URL: https://github.com/apache/cordova-docs/issues/1210#issuecomment-938627159
Ah ok! Interesting. If that's the case I'd suspect it to work like the other web storage strategies. I think it should be tested though.
> Various sites out there have some information about total size limits on iOS, etc. etc. but it is hard to find what applies to apps running inside Cordova/WKWebView.
I know in Chromium, the web storage quota is not constant. It's dynamic based on the total available disk space available on the device. On devices with large space (> 10GB if I recall) the quota is about 10%, otherwise it's some hard-coded value. It's not documented, but you can find the code in the chromium source code. Which also means these rules are subjected to change, as it's an implementation detail.
For iOS, I don't think there is any such code in the open source WebKit project -- but we do know there are limits. We just don't know how they decide those limits.
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[GitHub] [cordova-docs] mfulton26 commented on issue #1210: Cache storage documentation
Posted by GitBox <gi...@apache.org>.
mfulton26 commented on issue #1210:
URL: https://github.com/apache/cordova-docs/issues/1210#issuecomment-938610088
> Note that the `Cache` interface is exposed to windowed scopes as well as workers. You don't have to use it in conjunction with service workers, even though it is defined in the service worker spec.
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