Set the negotiation cache, and the browser reads the cache directly without sending a request to the server to confirm whether the cache resource is valid

The catch-control:max-age=0 set by the

resource server should normally be that every time accesses the domain name it should send a request to the resource server to confirm whether the cache of index.html is valid, but the second visit (figure 2) Why does the domain name not like the third time (figure 3) send a request to confirm whether the cache is valid, but read the cache directly?

  • visit the domain name for the first time, normal

  • --

Chrome html5 javascript
Jun.14,2022

you can't read this question. As far as I know, if the browser doesn't read the resources in the cache, it can only read the requested resources.

it's a little strange to see how your date date compares to the current date

there is no point in carrying max-age=0 on the client. This is the header used by the server to control the cache policy, and no-store or no-cache is the header that the client should carry.

nothing can be seen according to the three pictures. The cache read mechanism in the browser is very complicated. Generally speaking, there are several categories, and it is impossible to draw a more reliable conclusion through the comparison of the three images.

if there is no catch-control:max-age=0 in your first response header, then you must go to cache

previously nginx did not configure cache. After learning, I summarized nginx configuration cache & gzip

.

Previous: How does vue use axios to pass an array of objects to the background? And the background can receive this object? (node+express in the background)

Next: Vscode plug-in development packaging times error

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e880bd-46c68.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e880bd-46c68.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?