Menu
Is there a limit on the ammount of data I can store inside a javascript variable? If yes:
Is it limited by javascript, or by browser? (is it a fixed number, or a variable number?)
What if the limit is reached, or exceeded? Does the browser crash, or javascript throws an error?
If I am making a lot of ajax calls, to different pages, and I want to store the result of these ajax calls in a global variable in javascript for future use(to free up the amount of queries to the server, and quicken the response the user gets), is it guaranteed that my data will be stored in this variable?
For example:
function afterAjaxResponse(responseText) {
cache[ajaxIdentifier]=responseText;
}
Is there a limit on how many data I can store in the "cache" object? If yes, can I check somehow if the data to be stored still fits in it, and if not, free up the cache? (for example with a try/catch)
EDIT: The possible duplicate doesn't answer my question, because I want to know the limit of a javascript object, not a string, and it also doesn't answer to what happens when the limit is reached.
There must be a limit, but it would be nice to know, if that limit comes from javascript or the browser, and if I can check somehow if that limit is reached, to solve the problem accordingly.
253
You can cache a resource using three methods add , addAll , set . add() and addAll() method automatically fetches a resource, and caches it, whereas in set method we will fetch a data and set the cache. });});
In general, most modern browsers will cache JavaScript files. This is standard practice for modern browsers and ensures an optimized loading experience. Cached assets such as JavaScript will typically be served from the browser's cache instead of making another request for a resource that has already been retrieved.
Caches are used to store temporary files, using hardware and software components. An example of a hardware cache is a CPU cache. This is a small chunk of memory on the computer's processor used to store basic computer instructions that were recently used or are frequently used.
A cache's primary purpose is to increase data retrieval performance by reducing the need to access the underlying slower storage layer. Trading off capacity for speed, a cache typically stores a subset of data transiently, in contrast to databases whose data is usually complete and durable.
The only hard-limit i can think of looking at your sample is the array size, that is defined in the ECMAScript standard as being the maximum value that can be represented in an unsigned 32bit integer (via ToUint32):
ToUint32: (Unsigned 32 Bit Integer)
The abstract operation ToUint32 converts its argument to one of 2^32 integer values in the range 0 through 2^32−1, inclusive.
No other limits are present on a generic variable itself, other than the memory available for allocation, if you have enough memory that variable will be stored, if not, it will not (i guess it will not fail gracefully).
There is no way for you to know if something went wrong during allocation, the best approach is to decide beforehand how much memory at max your cache will use and stick to that maximum size (limiting array size or using a circular array considering that it's a cache).
129
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
