Remove Code Remove Exercise Remove Metrics
article thumbnail

Site-Speed Topography

CSS Wizardry

Any time you run a test with WebPageTest, you’ll get this table of different milestones and metrics. Higher variance means a less stable metric across pages. I can see from the screenshot above that TTFB is my most stable metrics—no one page appears to have particularly expensive database queries or API calls on the back-end.

Speed 328
article thumbnail

Migrating Critical Traffic At Scale with No Downtime?—?Part 1

The Netflix TechBlog

The second phase involves migrating the traffic over to the new systems in a manner that mitigates the risk of incidents while continually monitoring and confirming that we are meeting crucial metrics tracked at multiple levels. This approach has a handful of benefits.

Traffic 349
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Building High-Quality Software

DZone

It sits at the very beginning of the process before the code is written and can save an immense amount of time down the road (of somebody spending tons of time just to get to a dead-end). I really like what one of the smartest people with whom I worked said: “A good design is a design where you can see the code”. Important note.

Software 245
article thumbnail

Uplevel your gamechanging skills at Perform 2022

Dynatrace

Attendees will have the same great Dynatrace experts teaching the sessions live via webcam (and we’d highly encourage you to turn on your webcam as well), the same virtual classroom to join and complete the hands-on exercises, and the same great content. Already Dynatrace Associate Certified?

article thumbnail

Optimizing Python code during development

Dynatrace

For this blog post I want to focus on how you can leverage Dynatrace to get a lot of insight into your plugin code. Part 1 – The code as it stood. The Juniper plugin is an ActiveGate Plugin written in Python, it consists of a script that connects to a Juniper Networks device and collects some facts and metrics about it.

Code 117
article thumbnail

Seamlessly Swapping the API backend of the Netflix Android app

The Netflix TechBlog

On the Android team, while most of our time is spent working on the app, we are also responsible for maintaining this backend that our app communicates with, and its orchestration code. Image taken from a previously published blog post As you can see, our code was just a part (#2 in the diagram) of this monolithic service.

Latency 243
article thumbnail

Evolving Container Security With Linux User Namespaces

The Netflix TechBlog

In the kernel, you’ll often see capability checks spread throughout the code, which looks something like this: [link] Notice this function doesn’t check if the user is root, but if the task has the CAP_SYS_ADMIN capability before allowing it to execute. Let’s go back to that kernel code example earlier. User Namespaces.

Media 297