They are slightly different – the ETag does not have any information that the client can use to determine whether or not to make a request for that file again in the future. If ETag is all it has, it will always have to make a request. However, when the server reads the ETag from … Read more
It is up to the browser but they behave in similar ways. F5 usually updates the page only if it is modified. Modern browsers sends Cache-Control: max-age=0 to tell any cache the maximum amount of time a resource is considered fresh, relative to the time of the request. CTRL–F5 is used to force an update, … Read more
For modern web browsers (After IE9) See the Duplicate listed at the top of the page for correct information! See answer here: How to control web page caching, across all browsers? For IE9 and before Do not blindly copy paste this! The list is just examples of different techniques, it’s not for direct insertion. If … Read more
Gradle cache is located at On Windows: %USERPROFILE%\.gradle\caches On Mac / UNIX: ~/.gradle/caches/ You can browse to these directory and manually delete it or run rm -r $HOME/.gradle/caches/ on UNIX system. Run this command will also force to download dependencies. UPDATE Clear the Android build cache of current project NOTE: Android Studio’s File > Invalidate … Read more
This solution is written in PHP, but it should be easily adapted to other languages. The original .htaccess regex can cause problems with files like json-1.3.js. The solution is to only rewrite if there are exactly 10 digits at the end. (Because 10 digits covers all timestamps from 9/9/2001 to 11/20/2286.) First, we use the … Read more
As far as I know a common solution is to add a ?<version> to the script’s src link. For instance: <script type=”text/javascript” src=”https://stackoverflow.com/questions/32414/myfile.js?1500″></script> I assume at this point that there isn’t a better way than find-replace to increment these “version numbers” in all of the script tags? You might have a version control system do … Read more
There are a couple of possibilities. One I like uses a stringstream as a go-between: std::ifstream t(“file.txt”); std::stringstream buffer; buffer << t.rdbuf(); Now the contents of “file.txt” are available in a string as buffer.str(). Another possibility (though I certainly don’t like it as well) is much more like your original: std::ifstream t(“file.txt”); t.seekg(0, std::ios::end); size_t … Read more
I had this same question, and found some info in my searches (your question came up as one of the results). Here’s what I determined… There are two sides to the Cache-Control header. One side is where it can be sent by the web server (aka. “origin server”). The other side is where it can … Read more
Preliminaries On modern computers, only the lowest level memory structures (the registers) can move data around in single clock cycles. However, registers are very expensive and most computer cores have less than a few dozen registers. At the other end of the memory spectrum (DRAM), the memory is very cheap (i.e. literally millions of times … Read more
When you run a program in Python, the interpreter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project’s folder, only their extensions will be either .pyc … Read more