Otto van der Schaaf

TLDR; Based on a hunch, one thing you could try, is configuring `RateLimitBackgroundFetches` to limit the amount of in-flight work. Or switch to use `LoadFromFile` to avoid lots of in-flight...

Well, the `[0921/150340:FATAL:cache_batcher.cc(272)] Check failed: iter != in_flight.end().` in the logs might be a hint, or a red herring (a crash elsewhere might cause false flags). Starting out with that:...

I think we did upgrade apr/aprutil in 1.14, so it's worth a shot. I'm not super confident either that it will fix the problem, but I can't say there's 0%...

Also, it may be worth trying a different memcached version too if that is viable and you'd like to stay on it for some reason. Switching to Redis, as @jmarantz...

Thanks @ajconejo it is helpful to know that the problem persists with 1.14. One more thought: I just remembered that on master I added https://github.com/apache/incubator-pagespeed-mod/commit/1cc142ecca589964348d059bc2ef8203ecd7961d I did so after a...

Did you see https://www.modpagespeed.com/doc/downstream-caching ?

If you query the origin directly, do the caching headers show? If not -- if you disable pagespeed and query the origin, do they show? Otto On Fri, Feb 9,...

Not sure if this works for cache directives but it is worth a try.. Could you try if you can use https://www.modpagespeed.com/doc/configuration#add-resource-header to massage the final resource response headers into...

Well, first I thought that `ModifyCachingHeaders` pretty much does what it says on the tin when you turn it off. But after reading https://www.modpagespeed.com/doc/configuration#ModifyCachingHeaders it seems that it should be...

Updated the title to describe the bug more accurately