Nginx to serve the same tiny image everytime

Ram

6/29/24, 5:29 AM

I am using NGINX to serve a tracking pixel ( 1x1 image ) just to log the http call

Can I serve the image right from memory rather than having to serve a file

1 + 1

linux

nginx

Jaromanda X

6/29/24, 10:10 AM

I hope this isn't the only thing you're doing with nginx, otherwise it's like using a sledgehammer to crack a nut

Score:2

Server

MoWo

6/29/24, 11:30 AM

As others have pointed out, Linux will do some file system caching automatically and your tiny file is very likely going to always fit nicely in that :) If you want to be extra sure about it, you could of course create a ram disk on system startup, mount it to the file system, copy your image file there and have Nginx serve its content from the ramdisk location. Basic instructions on how to do this can be found here: https://www.linuxbabe.com/command-line/create-ramdisk-linux

This will guarantee your file will always get delivered from ram and never be read from the disk, except at system startup.

+ 1

Jonathan.Rosa

6/29/24, 7:06 PM

It's also worth noting that NGINX also has `open_file_cache` (allowable in location block) to keep the file descriptor open for this tiny file.

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