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Redis vs. Memcached – 2021 Comparison

Scalegrid

Both Redis and Memcached are: NoSQL in-memory data structures Written in C Open source Used to speed up applications Support sub-millisecond latency In 2014, Salvatore wrote an excellent StackOverflow post on […]. Memcached, on the other hand, was created in 2003 by Brad Fitzpatrick.

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KeyCDN Launches New POPs in 2021

KeyCDN

We're excited about the newly launched points of presence (POPs) in 2021! The image below shows a significant drop in latency once we've launched the new point of presence in Israel. In fact, latency has been reduced by almost 50%! According to Wikipedia, Greece has an average internet connection speed of just over 30 Mbps.

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The Speed of Time

Brendan Gregg

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? I've shared many posts about superpower observability tools, but often humble hacking is just as effective. Try changing the kernel clocksource.

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Site reliability done right: 5 SRE best practices that deliver on business objectives

Dynatrace

trillion by 2027, up from $800 billion in 2021. Microservices-based architectures and software containers enable organizations to deploy and modify applications with unprecedented speed. At the lowest level, SLIs provide a view of service availability, latency, performance, and capacity across systems.

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The Performance Inequality Gap, 2021

Alex Russell

Here begins our 2021 adventure. If there's a bright spot in our construction of a 2021 baseline for performance, this is it. Recall that single-core performance most directly translates into speed on the web. Trickle-down user experience from developer-experience is, in 2021, as fully falsified as the Laffer Curve.

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USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon

Brendan Gregg

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

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USENIX LISA2021 Computing Performance: On the Horizon

Brendan Gregg

## References I've reproduced the talk references below, so you can click on links: - [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] Jul 2008 - [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] 2010 - [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency? Ford, et al., “TCP