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Kubernetes Observability: Code Profiling With Flame Graphs

Percona

It shows which code paths are more busy on the CPU in given samples. An example of a flame graph can be found below: Each box is a function in the stack, and wider boxes mean more time the system was busy on CPU on these functions. An example is kubectl-flame ( [link] ). ✔ Launching profiler. ✔ Profiling.

Code 112
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Where programming languages are headed in 2020

O'Reilly

As we enter a new decade, we asked programming experts?—including The experimental DSL for code contracts gives developers the ability to provide guarantees about the ways that code behaves. Code contracts allow you to make these promises, and the compiler can use them to loosen compile-time checks.

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Learn eBPF Tracing: Tutorial and Examples

Brendan Gregg

It can be used for many things: network performance, firewalls, security, tracing, and device drivers. So instead of a static HTML website, JavaScript lets you define mini programs that run on events like mouse clicks, which are run in a safe virtual machine in the browser. People will use it and code in it via frameworks.

C++ 111
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Software Testing Errors to look out for (with examples)

Testsigma

Example: An e-commerce website is unable to process the payment part. For example, a user has submitted a form, and the progress bar is showing no progress or activity then the user will get confused if the form has been submitted successfully or not. Example: divide by zero, multiplication of 2 large numbers, etc. Error flags.

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IT modernization improves public health services at state human services agencies

Dynatrace

Program staff depend on the reliable functioning of critical program systems and infrastructure to provide the best service delivery to the communities and citizens HHS serves, from newborn infants to persons requiring health services to our oldest citizens. IT modernization can help.

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MongoDB SSL with self-signed certificates in C#

Scalegrid

If your application connects to the production database over a public network, do reach out to support@scalegrid.io Note: All the code samples have been tested using MongoDB Driver v2.8.1 🚧 Remember to… Modify the file paths and connection URLs in the code samples to your own file paths and URLs.

C++ 244
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Introducing SafeTest: A Novel Approach to Front End Testing

The Netflix TechBlog

Conversely, using integration testing tools like Cypress or Playwright provides control over the page, but sacrifices the ability to instrument the bootstrapping code for the app. This approach has its own set of challenges: Difficulty in making calls to an alternative API endpoint without implementing custom network layer API rewrite rules.

Testing 244