CODEWITHSUNDEEP
javascriptgoogle-chrome-extensionlocal-storage
happy_marmoset
happy_marmoset

Reputation: 79

Chome Extension - QuotaExceededError localStorage

I'm developing a Chrome extension and using old localStorage to store settings and cache instead of new chrome.storage.local and chrome.storage.sync. I have unlimitedStorage permission and then my cache becomes huge. I'm receiving QuotaExceededError.

How to overcome the problem?

Upvotes: 2

Views: 2853

Answers (1)

Makyen
Makyen

Reputation: 33306

localStorage is not, and will not be, unlimited

The fact that the unlimitedStorage permission does not apply to localStorage is stated in the documentation. The referenced bug, issue 58985, was marked as "WontFix" in December of 2010. Thus, there is not, and will not be, a solution for you to store unlimited data in localStorage. You will need to select some other method of storing your data.

Unlimited storage options

storage.local

Your options include chrome.storage which is explicitly intended for extensions to store data. You can store data that is local to the machine, using storage.local (can be unlimited with the unlimitedStorage permission), or data that is synchronized across the user's Google account, with storage.sync (quota is not set to unlimited by unlimitedStorage).

Web SQL Database

There are other options for storing data. For instance, the Web SQL Database, which is specifically granted unlimited storage by the unlimitedStorage permission.

HTML5 local File API (MDN)

The amount of data you can store with the File API becomes unlimited with the unlimitedStorage permission. You can also separately request a specific quota size with a call to webkitStorageInfo.requestQuota(), without using the unlimitedStorage permission. When you do, the user will be asked to approve the storage request. If you do use the unlimitedStorage permission, you do not need to separately request a quota.

What to use

What is best to use will depend on exactly what you are using storage for. You have provided no information as to your actual use, so there is no way for us to gauge what might be a good fit in your case.

Application cache

As to your issue with the application cache growing to a large size with the unlimitedStorage permission: Yes, the documenation explicitly states that declaring the unlimitedStorage permission will result in the application cache becoming unlimited. If this is an issue, you will need to not declare the unlimitedStorage permission.

Upvotes: 5

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