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this week's favorite

Where did 80 characters in terminal come from

Open a terminal window on your computer—whether Windows, Mac or Linux—and unless you’ve fiddled the defaults, the width is almost always 80 columns.

5 heuristics to decide when It’s time to stop designing and start coding

As engineers, we divide our work between designing solutions and building them. In this post, I'll focus on deciding how much time and effort should go into design work that happens before any execution (coding).

How Postgres stores rows

Out of curiosity, I was trying to understand how PostgreSQL stores the data onto the disk and there are a few interesting things that I have noticed that might be useful for application developers. In this post, I will try to go into the implementation level details and map out how PostgreSQL row storage really works.

How does UTF-8 turn “😂” into “F09F9882”?

If you're anything like me, you love emojis! Emojis appear like an image on the screen, but they aren't an image like a PNG or JPEG. What do emojis look like to computers?

AWS S3: Why sometimes you should press the $100k button

Mere mortals implement best practices for S3 read and write performance, create a million billion s3 objects with their high performance system, try to clean up the really really expensive mess and find themselves in a dimension as vast as space and as timeless as infinity.

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