blue-green deployment

Intermediate 💻 Tech / IT

Definition

A release strategy using two identical production environments where you switch traffic from the old version (blue) to the new version (green) instantly. If green catches fire, you switch back to blue faster than anyone can tweet about it.

Example Usage

We're doing a blue-green deployment tonight so we can roll back instantly if anything breaks.

Origin

Emerged from continuous delivery practices in the 2000s, colors chosen arbitrarily and are definitely not red/green for accessibility reasons

Fun Fact

Some companies use different color schemes (red-black, A-B) because apparently someone finally realized that 8% of men can't distinguish blue from green.

Source: DevOps and continuous deployment methodologies

Related Terms

Beginner

functionality

Corporate speak for "what this thing actually does" when stripped of marketing fluff and aspirational promises. In product development, it's the features that work versus the ones listed on the box; in trademark law, it's the legal concept that saves actually useful designs from being monopolized. The more someone emphasizes "rich functionality," the more likely you're getting a bloated mess of half-working features nobody asked for.

💻 Tech / IT
Intermediate

configuration

The particular way you've arranged all the settings, parts, or options of a system—basically the 'build' of your tech setup. In IT, it's the difference between a computer that purrs and one that sounds like an angry lawnmower. Getting the configuration right is half science, half voodoo, and entirely critical for things to actually work.

💻 Tech / IT
Beginner

directory

A virtual folder in your computer's filing system where files go to multiply and create chaos, or where you organize them with good intentions that last approximately three days. It's a container within a container within a container, nested like Russian dolls of digital hoarding. The path to any given directory reveals either your organizational genius or your descent into madness.

💻 Tech / IT
Intermediate

cache

A speedy little storage spot where your computer or browser stashes frequently used stuff so it doesn't have to fetch it from the slow-ass hard drive or internet every single time. Think of it as your system's equivalent of keeping snacks in your desk drawer instead of walking to the vending machine. Clear it when things get weird, hoard it when you want speed.

💻 Tech / IT
Advanced

instrumentation

In tech, it's the code you embed to monitor, measure, and log what your application is actually doing behind the scenes, because trust but verify. Think of it as installing security cameras in your software to catch bugs in the act. In music, it's arranging notes for different instruments, but let's be honest, you're here for the tech definition.

💻 Tech / IT
Beginner

Bug

An unintended feature that makes your software do something hilariously or catastrophically wrong. The word comes from an actual moth found in a 1947 computer, which means the very first bug was literally a bug, and it's been downhill ever since.

💻 Tech / IT

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