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Site-Speed Topography Remapped

CSS Wizardry

This is an update to my 2020 article Site-Speed Topography. Around two and a half years ago, I debuted my Site-Speed Topography technique for getting broad view of an entire site’s performance from just a handful of key URLs and some readily available metrics. What Is Site-Speed Topography? Are any metrics over budget?

Speed 131
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In Defence of DOM­Content­Loaded

CSS Wizardry

I never thought I’d write an article in defence of DOMContentLoaded , but here it is… For many, many years now, performance engineers have been making a concerted effort to move away from technical metrics such as Load , and toward more user-facing, UX metrics such as Speed Index or Largest Contentful Paint. log ( window. performance.

Metrics 326
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The Speed of Time

Brendan Gregg

The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. Without NMI, some kernel code paths (interrupts disabled) can't be profiled. But I'm not completely sure.

Speed 126
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Announcing the Availability of Percona Backup for MongoDB 2.2.0

Percona

To make sure that Percona Backup for MongoDB answers the pains of our customers, we took the common denominator of the pains that anyone using snapshot capabilities faces when performing backups and restores and positioned PBM as the open source, freely available answer to those pains. I am happy to announce that with PBM 2.2.0,

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The Three Cs: Concatenate, Compress, Cache

CSS Wizardry

What is the availability, configurability, and efficacy of each? ?️ This is because, at present, algorithms like Gzip and Brotli become more effective the more historical data they have to play with. Connection One thing we haven’t looked at is the impact of network speeds on these outcomes. It’s a balancing act for sure. ?

Cache 291
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Create compelling insights into business and operational KPIs through metric calculations in the Data explorer

Dynatrace

This is especially true when the goal is to present information to non-technical users, but all technical teams can benefit from aligning raw metrics with higher-level KPIs and SLOs. With the Data explorer, you not only get to explore your metrics with minimal effort, you can also dive deeper to customize your query code. What’s next?

Metrics 244
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Detect VMware Aria Operations for Logs exploitation with Dynatrace and DQL

Dynatrace

Tracked as CVE-2023-34051 (CVSS score: 8.1), the Aria Operations for Logs vulnerability relates to a case of authentication bypass that could lead to remote code execution. They have made a PoC for the vulnerability available and published the relevant indicators of compromise (IoC). Spoof the IP address of the known worker.

Analytics 259