– or: How to persist data in the 21st century.
The common way to persist data on the client side – application state, offline data, whatever – still is to use cookies. But times have changed, and so have browsers, and there are better ways to do it today.
But why are cookies that bad? Well, here are the top three reasons:
- Of all client side storage mechanisms, cookies have the worst limitation in size (4k if you want to stay IE-safe)
- Cookies are sent to the server on every requests that matches the cookie domain – inlcuding XHR calls (aka. How to slow down your AJAX app)
- Cookies perform bad, can be easily disabled, and, oh well, they are sooo 1995…
What else to use? There are several options, let’s start with the best:
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