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What is a cached response?
Response caching reduces the number of requests a client or proxy makes to a web server. Response caching also reduces the amount of work the web server performs to generate a response. Response caching is controlled by headers that specify how you want client, proxy, and middleware to cache responses.
Can post response be cached?
The POST response body can only be cached for subsequent GET requests to the same resource. Set the Location or Content-Location header in the POST response to communicate which resource the body represents. So the only technically valid way to cache a POST request, is for subsequent GETs to the same resource.
Why is this response being cached in Google Chrome?
I’m obviously going to recommend that they add Expires or Cache-Control as appropriate, but I’m confused: Chrome caches this resource and uses it from cache (not sending a request at all ), even after several hours (for instance, it reused a copy it cached yesterday at 1:30 p.m. this morning at 8:30 a.m.).
How is the cache ability of a web browser determined?
Efficiently using the browser cache can improve end user response times and reduce bandwidth utilization. The cache-ability of an item on the browser is determined by: The response headers returned from the origin web server. If the headers indicate that content should not be cached then it won’t be.
What does a cache do when a request is sent to the server?
The cache should not store anything about the client request or server response. A request is sent to the server and a full response is downloaded each and every time. A cache will send the request to the origin server for validation before releasing a cached copy.
Why does a page stay in cache for a day?
Some browsers do use algorithms that let the page remain in cache for a day or more. Last-Modified is a “weak” caching header in that the browser applies a heuristic to determine whether to fetch the item from cache or not. (The heuristics are different among different browsers.)