Not sure. Apache always has several projects that do the same thing for one reason or another. Usually they're projects from competing organizations like Google and Facebook.
> Apache Traffic Server is under-appreciated as a large file cache. Used as an edge Docker pull-through cache to improve cold starts & as a CDN cache to lower our S3 bill.
And because they're using Apache where, due to a combination of the still-common forking process model and KeepAlive, they get exciting OOM events if 20 people click on a link simultaneously.
Interesting - how can the trend seen in those charts be explained? The clearly falling popularity of Apache the larger the website and clearly rising popularity of Nginx complement each other nicely.
It seems more like they are deployed behind load balancers, because load balancing is a specific job that it makes sense to do with a separate piece of software. Admittedly, that separate piece of software is often nginx, but there are other popular options, and I don't think very many people use Apache that way (though I could be wrong).
Because it's really easy to integrate it with Apache and this will solve some performance issues. If you use it a lot you might get annoyed by some pages loading too slow otherwise.
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