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-rw-r--r--content/posts/2022-01-28-media-shrinkage.md21
1 files changed, 17 insertions, 4 deletions
diff --git a/content/posts/2022-01-28-media-shrinkage.md b/content/posts/2022-01-28-media-shrinkage.md
index 2b99736..81057a1 100644
--- a/content/posts/2022-01-28-media-shrinkage.md
+++ b/content/posts/2022-01-28-media-shrinkage.md
@@ -64,13 +64,16 @@ load in [Chrome][]:
`convert -quality 100 -define webp:lossless=true src.png dst.png`
* [Apache][] [mod\_deflate][mod_deflate] config:
`AddOutputFilterByType image/svg+xml`
-* [HTTP/2][] in [Apache][]: Install [mod\_http2][mod_http2], add
- `Protocols h2 http/1.1` to config.
+* [HTTP/2][] in [Apache][]: Install [mod\_http2][mod_http2] and add
+ `Protocols h2 http/1.1` to the [Apache][] config. You should also
+ switch from [mpm\_prefork][mpm_prefork] to [mpm\_event][mpm_event] or
+ [mpm\_worker][mpm_worker], but if you're using a non-threadsafe
+ module like [mod\_php][mod_php] then this will give you some grief.
* [Debian][]: Add `image/webp webp` to `/etc/mime.types`.
**Update (2022-01-29):** Small formatting, grammar, and spelling fixes.
-Added note about [HTTP/2][], warning about [BREACH][], and link to
-[tdewolff/minify][tdewolff-minify].
+Added [HTTP/2][] note, [BREACH][] warning, and
+[tdewolff/minify][tdewolff-minify] link.
[svg]: https://en.wikipedia.org/wiki/Scalable_Vector_Graphics
"Scalable Vector Graphics"
@@ -122,3 +125,13 @@ Added note about [HTTP/2][], warning about [BREACH][], and link to
"HyperText Transfer Protocol, version 2"
[mod_http2]: https://httpd.apache.org/docs/2.4/howto/http2.html
"Apache HTTP/2 module"
+[mpm_event]: https://httpd.apache.org/docs/2.4/mod/event.html
+ "Apache multi-processing module that uses worker threads. Newer than mpm-worker."
+[mpm_worker]: https://httpd.apache.org/docs/2.4/mod/worker.html
+ "Apache multi-processing module that uses worker threads."
+[mpm_prefork]: https://httpd.apache.org/docs/2.4/mod/prefork.html
+ "Apache multi-processing module that uses pre-forked processes."
+[mod_php]: https://cwiki.apache.org/confluence/display/httpd/php
+ "PHP module for Apache"
+[vhost]: https://httpd.apache.org/docs/2.4/vhosts/
+ "Apache virtual host"