# Developer Documentation for the Apache HTTP Server 2.4

# Warning

Many of the documents listed here are in need of update. They are in different stages of progress. Please be patient and follow this link to propose a fix or point out any error/discrepancy.

# 2.4 development documents

- Developing modules for the Apache HTTP Server 2.4
- Hook Functions in 2.4
- Request Processing in 2.4
- How filters work in 2.4
- Guidelines for output filters in 2.4
- Documenting code in 2.4
- Thread Safety Issues in 2.4

# Upgrading to 2.4

- API changes in 2.3/2.4
- Converting Modules from 1.3 to 2.x

# External Resources

- Autogenerated Apache HTTP Server (trunk) code documentation (the link is built by this job).
- Developer articles at apachetutor include:
  - Request Processing
  - Configuration for Modules
  - Resource Management
  - Connection Pooling
  - Introduction to Buckets and Brigades