From: Daniel Gruno
Several changes in Apache 2.0 affect the internal request +
Several changes in 2.0 and above affect the internal request processing mechanics. Module authors need to be aware of these changes so they may take advantage of the optimizations and security enhancements.
The first major change is to the subrequest and redirect
mechanisms. There were a number of different code paths in
- Apache 1.3 to attempt to optimize subrequest or redirect
- behavior. As patches were introduced to 2.0, these
+ the Apache HTTP Server 1.3 to attempt to optimize subrequest
+ or redirect behavior. As patches were introduced to 2.0, these
optimizations (and the server behavior) were quickly broken due
to this duplication of code. All duplicate code has been folded
back into ap_process_request_internal()
to prevent
@@ -50,7 +50,7 @@
and correct implementation of the HTTP server RFC. Additional
goals include security, scalability and optimization. New
methods were sought to optimize the server (beyond the
- performance of Apache 1.3) without introducing fragile or
+ performance of 1.3) without introducing fragile or
insecure code.
To streamline requests, the module author can take advantage of the hooks offered to drop out of the request cycle early, or - to bypass core Apache hooks which are irrelevant (and costly in + to bypass core hooks which are irrelevant (and costly in terms of CPU.)