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The road to observability with OpenTelemetry demo part 1: Identifying metrics and traces

Dynatrace

Metrics provide a unified and standardized definition to numerical data points over a period of time (for example, network throughput, CPU usage, number of active users, and error rates), whereas logs address traditional logging and allow you to handle logging information in an aggregated fashion.

Metrics 180
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How to use Server Timing to get backend transparency from your CDN

Speed Curve

Caching the base page/HTML is common, and it should have a positive impact on backend times. Key things to understand from your CDN Cache Hit/Cache Miss – Was the resource served from the edge, or did the request have to go to origin? In the case of a cache miss, this should be zero.)

Servers 57
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Image Processing Insights

KeyCDN

Properly size images: Scaled images will definitely reduce the overall website size. Even if a browser doesn't support WebP, our WebP caching feature will ensure that the correct image format is delivered. WebP means faster loading times and less traffic. The available operations are listed in our documentation.

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Breaking Down Bulky Builds With Netlify And Next.js

Smashing Magazine

Without build optimizations (incremental builds, caching, we will get to those soon) this will eventually become unmanageable as well — think about going through all images in a website: resizing, deleting, and/or creating new files over and over again. The cache is invalidated on a time basis. Creating an On-Demand builder.

Cache 129
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50 ways to leak your data: an exploration of apps’ circumvention of the Android permissions system

The Morning Paper

you should definitely check it out if you don’t already know it!). However, these fixes will only be available to users able to upgrade to Android Q — those with the means to own a newer smartphone. Network traffic is also monitored, included all TLS-secured traffic where the developers hadn’t used certificate pinning (i.e.,

Systems 74
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Migrating Netflix to GraphQL Safely

The Netflix TechBlog

The GraphQL shim enabled client engineers to move quickly onto GraphQL, figure out client-side concerns like cache normalization, experiment with different GraphQL clients, and investigate client performance without being blocked by server-side migrations. The Replay Tester tool samples raw traffic streams from Mantis.

Traffic 353
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Synthetic Monitoring vs. RUM

Rigor

Reading time 4 min It’s important for both technical and business teams to understand the different web performance monitoring options that are available as well as their various use cases and the benefits of each. The measured traffic is not of your actual users; it is synthetically generated to collect data on page performance.