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---
-title: "Comments 2"
-date: 2023-08-22T14:48:41+01:00
-draft: false
-params:
- comments: true
+.title = "Comments 2",
+.author = "Martin Ashby",
+.date = @date("2023-08-22T14:48:41+01:00"),
+.layout = "single.html",
+.custom = {"comments": true},
---
[Previously](/posts/2022-12-30-comments/) I added a basic comment system to my website using a separate web server which served only the comment HTML. This is fine, but it does require another program running continuously on my server. Since that server is a raspberry pi, and it is running a lot of other software as well, and my blog doesn't get a lot of hits (let alone comments), I thought I could do better by using the [Common Gateway Interface (CGI)](https://en.wikipedia.org/wiki/Common_Gateway_Interface). CGI doesn't require a daemon program, but instead will launch a program to generate dynamic content when someone loads the page. In this way, no memory or CPU is required until an actual page is requested. The downside is that a new process is launched for each page load, but I think that's an OK trade-off for me. I already have CGI configured on my web server for running [cgit](/posts/2022-12-31-cgit/).