Home > Backend Development > Golang > Why is http.FileServer Serving Stale Content When Using Virtual Box Shared Folders?

Why is http.FileServer Serving Stale Content When Using Virtual Box Shared Folders?

Barbara Streisand
Release: 2024-11-02 18:59:31
Original
682 people have browsed it

Why is http.FileServer Serving Stale Content When Using Virtual Box Shared Folders?

Caching Woes with http.FileServer

The http.FileServer in the Go standard library has been known to exhibit caching issues, leading to stale content being served after file edits. A user encountered this problem and sought assistance.

Issue Description:

An application using http.FileServer was experiencing incorrect file content delivery, despite a changing Content-Length header. The content would only update after a server or system reboot.

Extended Investigation:

To rule out potential sources of caching, the user examined the application's code, but found no evidence of caching mechanisms. They also tested the application on different platforms (Windows, Ubuntu, OS X), with no change in behavior.

Solution: Avoid Virtual Box Shared Folders

After some investigation, the user discovered the culprit: Virtual Box shared folders. When files were served from a Virtual Box shared folder, the caching issue occurred. However, when the files were stored on the host system and served from there, the problem disappeared.

Cause:

The underlying issue is that Virtual Box shared folders appear to implement their own caching mechanism, which conflicts with the caching performed by http.FileServer. This leads to the stale content being served.

Recommendation:

To avoid this caching issue, it is recommended to store files intended for use in http.FileServer outside of Virtual Box shared folders. This ensures that the application's caching mechanism is the sole controller of content delivery, preventing stale content from being served.

The above is the detailed content of Why is http.FileServer Serving Stale Content When Using Virtual Box Shared Folders?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template