. . . . . . . . . . . . . . . . . . . . . . . 1058 11.6 Hook Functions in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059 11.7 Converting Modules from Apache 1.3 . . . . . . . . . . . . . . . . . . . . . 1062 11.8 Request Processing in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . 1066 11.9 How filters work in Apache 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1072 11.11 Apache HTTP Server 2.x Thread Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1079 x CONTENTS 12 Glossary

. . . . . . . . . . . . . . . . . . . . . . . 1044 11.6 Hook Functions in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . . . 1045 11.7 Converting Modules from Apache 1.3 . . . . . . . . . . . . . . . . . . . . . 1048 11.8 Request Processing in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . 1052 11.9 How filters work in Apache 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1058 11.11 Apache HTTP Server 2.x Thread Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1065 12 Glossary and

scripting options which run as part of the server itself, such as mod_php, mod_perl, mod_tcl, and mod_python, run under the identity of the server itself (see the User directive), and therefore scripts executed not. Dynamic content security When setting up dynamic content, such as mod_php, mod_perl or mod_python, many security considerations get out of the scope of httpd itself, and you need to consult documentation for DSO support. Usage Summary To give you an overview of the DSO features of Apache HTTP Server 2.x, here is a short and concise summary: 1. Build and install a distributed Apache httpd module, say

scripting options which run as part of the server itself, such as mod_php, mod_perl, mod_tcl, and mod_python, run under the identity of the server itself (see the User directive), and therefore scripts executed not. Dynamic content security When setting up dynamic content, such as mod_php, mod_perl or mod_python, many security considerations get out of the scope of httpd itself, and you need to consult documentation for DSO support. Usage Summary To give you an overview of the DSO features of Apache HTTP Server 2.x, here is a short and concise summary: 1. Build and install a distributed Apache httpd module, say

scripting options which run as part of the server itself, such as mod_php, mod_perl, mod_tcl, and mod_python, run under the identity of the server itself (see the User directive), and therefore scripts executed not. Dynamic content security When setting up dynamic content, such as mod_php, mod_perl or mod_python, many security considerations get out of the scope of httpd itself, and you need to consult documentation for DSO support. Usage Summary To give you an overview of the DSO features of Apache HTTP Server 2.x, here is a short and concise summary: 1. Build and install a distributed Apache httpd module, say

scripting options which run as part of the server itself, such as mod_php, mod_perl, mod_tcl, and mod_python, run under the identity of the server itself (see the User directive), and therefore scripts executed not. Dynamic content security When setting up dynamic content, such as mod_php, mod_perl or mod_python, many security considerations get out of the scope of httpd itself, and you need to consult documentation for DSO support. Usage Summary To give you an overview of the DSO features of Apache HTTP Server 2.x, here is a short and concise summary: 1. Build and install a distributed Apache httpd module, say

scripting options which run as part of the server itself, such as mod_php, mod_perl, mod_tcl, and mod_python, run under the identity of the server itself (see the User directive), and therefore scripts executed not. Dynamic content security When setting up dynamic content, such as mod_php, mod_perl or mod_python, many security considerations get out of the scope of httpd itself, and you need to consult documentation for DSO support. Usage Summary To give you an overview of the DSO features of Apache HTTP Server 2.x, here is a short and concise summary: 1. Build and install a distributed Apache httpd module, say

. . . . . . . . . . . . . . . . . . . . . . . 966 11.6 Hook Functions in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . . . 967 11.7 Converting Modules from Apache 1.3 . . . . . . . . . . . . . . . . . . . . . 970 11.8 Request Processing in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . 974 11.9 How filters work in Apache 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 980 11.11 Apache HTTP Server 2.x Thread Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . 987 12 Glossary and Index

. . . . . . . . . . . . . . . . . . . . . . . 966 11.6 Hook Functions in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . . . 967 11.7 Converting Modules from Apache 1.3 . . . . . . . . . . . . . . . . . . . . . 970 11.8 Request Processing in the Apache HTTP Server 2.x . . . . . . . . . . . . . . . . . . . . . . . . . 974 11.9 How filters work in Apache 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 980 11.11 Apache HTTP Server 2.x Thread Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . 987 12 Glossary and Index

we can’t get rid of, we go into feature moratorium 2.3.2 is the first fully stable release in the 2.x train Richard Hartmann & Frederic Branczyk @TwitchiH & @fredbrancz Prometheus Deep Dive Introduction ACID databases... Atomicity - since 1.x Consistency - since 1.x Isolation - will happen within 2.x Durability - since 2.0 Richard Hartmann & Frederic Branczyk @TwitchiH & @fredbrancz Prometheus Deep Independent CNCF member project, IETF RFC, test suite, etc We are writing code in Prometheus and the Python client library https://github.com/OpenObservability/OpenMetrics Prometheus 2.5 has experimental