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WordPress Cache Enabler Plugin Updates

KeyCDN

In October 2015 KeyCDN released a free WordPress caching plugin called Cache Enabler. We did this because we wanted to give back to the WordPress community in the offering of a caching solution that was not complicated and most importantly, free. Over the last few months there have been many changes made to Cache Enabler.

Cache 116
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Bringing Rich Experiences to Memory-constrained TV Devices

The Netflix TechBlog

Our UI runs on top of a custom rendering engine which uses what we call a “surface cache” to optimize our use of graphics memory. Surface Cache Surface cache is a reserved pool in main memory (or separate graphics memory on a minority of systems) that the Netflix app uses for storing textures (decoded images and cached resources).

Cache 167
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Netflix End of Series 1

Brendan Gregg

The Netflix stack is more diverse than I was expecting, and is explained in detail in the [Netflix tech blog]: The production cloud is AWS EC2, Ubuntu Linux, Intel x86, mostly Java with some Node.js (and other languages), microservices, Cassandra (storage), EVCache (caching), Spinnaker (deployment), Titus (containers), Apache Spark (analytics), Atlas (..)

Java 142
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Mastering Disk Space Management with MongoDB® Storage Engines

Scalegrid

It uses a filesystem cache and write-ahead log for crash recovery. MongoDB makes use of both the filesystem cache and the WiredTiger internal cache. By default, the WiredTiger cache will occupy 50% of RAM minus 1 GB, or 256 MB. released in December 2015. Compaction operation defragments data files & indexes.

Storage 130
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The Return of the Frame Pointers

Brendan Gregg

Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway. It shouldn't be 10%, unless it's cache effects. And for leaf routines (which never establish a frame), this is a non-issue.

Java 137
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How To Add eBPF Observability To Your Product

Brendan Gregg

cachestat File system cache statistics line charts. Here are the top ten tools you can run and present as a generic BPF observability dashboard, along with suggested visualizations: Tool Shows Visualization. execsnoop New processes (via exec(2)) table. opensnoop Files opened table. ext4slower Slow filesystem I/O table.

Latency 144
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Fostering a Web Performance Culture

Jos

How would you architecture a non-trivial size web project (client, server, databases, caching layer)? In May 2015, Vox Media wrote about the slowness of their site and commitment to make them faster. What happens when a browser tries to load a website? What are some reasons why a site can take too long to load?