Once again my many thanks to Joshua for providing concise and extremely
informative responses on this list.
Joshua; Its people like you that make open-source communities *work*.
Cheers from Calgary,
Chris Price
Plenty of people use mod_deflate (and the older mod_gzip), so there
isn't any big catch. It does indeed significantly reduce bandwidth
usage and sometimes latency.
There are some disadvantages:
- Browser incompatibilities. The mod_deflate docs give instructions
on how to work-around the most common ones.
- Increased processor usage. But many webservers are not processor
constrained.
- Pages become less cacheable since you need to vary on at least
accept-encoding, and frequently user-agent as well.
- You can't use zero-copy techniques (liek the sendfile syscall ) to
send files, which increases the load on the server.
- For many sites, the majority of content is already-compressed stuff
like images, which won't be helped by mod_deflate.
Joshua.
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