Free Pluralsight from Microsoft

Mockoon is a free and open source local server/API mocking tool built with Electron and can be used on Windows, Linux and MacOS.

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Over the years, we've had thousands of conversations with developers implementing GraphQL at companies of all sizes. We want to share what we've learned, so we've distilled their experiences into a set of best practices for creating, maintaining, and operating a data graph. We present them here as 10 GraphQL Principles, broken out into three categories, in a format inspired by the Twelve Factor App.

Protocol buffers are a language-neutral, platform-neutral extensible mechanism for serializing structured data.

Wonderful, useful list of APIs to use to learn networking.

via BleepingComputer https://www.bleepingcomputer.com/

Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.

Lua 5.3+ has native support for well-known bitwise operators. (See [§3.4.2])
As of version 5.2, Lua ships with the library [bit32] that adds support for bitwise operations. Previous versions of Lua did not include bitwise operators, but bit32 has been backported to version 5.1. Alternatively, there are Lua libraries for this as well as some patched versions of Lua.