What is the difference between expires and max-age?
Quick Answer: Expires sets an expiry date for when a cookie gets deleted. Max-age sets the time in seconds for when a cookie will be deleted (use this, it’s no longer 2009) Internet Explorer (ie6, ie7, and ie8) does not support “max-age”, while (mostly) all browsers support expires.
What is Max-age in headers?
max-age. The max-age directive states the maximum amount of time in seconds that fetched responses are allowed to be used again (from the time when a request is made). For instance, max-age=90 indicates that an asset can be reused (remains in the browser cache) for the next 90 seconds.
What is cookie Max-Age?
When an Expires date is set, the deadline is relative to the client the cookie is being set on, not the server. Max-Age= Optional. Indicates the number of seconds until the cookie expires. A zero or negative number will expire the cookie immediately. If both Expires and Max-Age are set, Max-Age has precedence.
What is the use of persistent cookies?
Persistent Cookies are stored on a user’s device to help remember information, settings, preferences, or sign-on credentials that a user has previously saved. This helps create a convenient and faster website experience. These cookies have an expiration date issued to it by the webserver.
How long is Max-age 31536000?
It’s standard practice to set a Cache-Control: max-age=31536000 on assets which are expected not to change, such as images. This header instructs the browser to cache the asset for 31536000 seconds, which is one year.
How do I know when my cache expires?
Using the expiration model, there are two ways to determine whether a cache entry has expired:
- By checking the value of the Expires entity-header field against the Date value to see if the content has reached its expiration date.
- By checking the Cache-Control field for the max-age directive.
What is RefreshHit from Cloudfront?
If the X-Cache header is “Hit from cloudfront” or “RefreshHit from cloudfront,” then the request was served from the cache of the edge location. Review the rest of the response for the Cache-Control, Expires, and Age headers. If the Expires date is still in the future, then the cached response is also considered new.
What is the difference between no cache and no store?
As far as I know, no-store means that no cache device is allowed to cache that response. In the other hand, no-cache means that no cache device is allowed to serve a cached response without validate it first with the source.
Is it OK to eat expired cookies?
Cookies, Crackers and Chips When cookies or chips get old, the stale taste is quite obvious. But as long as it doesn’t smell funky (the oils in the cookie may go bad over a long period of time) and it doesn’t crumble apart in your hand, then it’s okay to eat.