🆚 mod_qos vs. mod_rpaf
- 📈 mod_qos is twice as popular as mod_rpaf.
- 🌍 mod_qos is more popular in Spain, the Czech Republic, and Germany.
- 🌍 mod_rpaf is more popular in Russia and Tajikistan.
mod_qos
mod_rpafType
About
mod_qos is a quality of service (QoS) module for the Apache web server that implements configurable control mechanisms to prioritize and manage HTTP requests to preserve server resources under load.
It offers limits on concurrent requests per URL or IP, per-second request rate caps, VIP user rules, and request blocking, delay, throttling, and connection dropping to avoid overload and mitigate traffic spikes.
mod_rpaf is an Apache module that restores the original client IP address when Apache runs behind a reverse proxy by rewriting REMOTE_ADDR based on X-Forwarded-For headers.
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Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,823,966 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.