Raul Junco 

@rauljuncov
I simplify software engineering. Sharing lessons to help early-career developers grow as Software Engineers. I write about Systems Design, Algorithms, Good Practices, and Machine Learning.
Latest post
What Works in a Monolith Can Break a Microservice
restacked

There are 27 million programmers.

But many of them don't know the most useful tech newsletters.

Here are some must-subscribe tech newsletters that'll give you incredible value (all free):

1 System design:

newsletter.systemdesign…

2 Product for engineers:

Sr. Software Engineer working at a startup.

This week I've been shutting down services I no longer need.

Terrifying; but still the best thing so far this year.

Sr. Software Engineer in an onboarding meeting.

Every Backend Engineer needs to know how to deal with payments.

Scaling reads is easy—cache, replicate, and you're good.

Scaling writes? That’s where things get tricky.

Reads scale horizontally with caching (Redis, CDN) and replication (read replicas).

But writes? They require partitioning and consistency trade-offs—things you can't just slap on later without pain.

Sharding, CQRS, and Event-Driven ap…

restacked

Don't stop learning.

Here's a good list of tech articles to read over the upcoming days:

9) Building React Components: Turning UI Designs Into React Components:

bit.ly/40vRRrk

Author:

8) How Bluesky Works:

restacked

40+ Awesome Newsletters you can start reading in 2025

Curious Engineer by

l

vivekbansal.substack.com

System Design One by

Event Sourcing is like Time traveling

Code Is Never Done—and That’s Totally Okay.

The alternative is over-engineering, which only complicates things later on.

Let’s face it: code is never really finished. And you know what? That’s a good thing.

I spent hours (okay, weeks) trying to make things perfect. Over-engineering every little thing, adding features "just in case."

restacked

There are 27 million software engineers.

But many of them don't know the most useful tech newsletters.

Here are some must-subscribe tech newsletters that'll give you incredible value (all free):

1/ System design:

newsletter.systemdesign…

2/ Product for engineers: