System Design Classroom
Raul JuncoA System Design Newsletter to help you build better software.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 68 | Founded | 2 years ago | Last Issue | 21 days ago |
| Active | |||||
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newsletter.systemdesignclassroom.co...Latest Issues
A Good System Design Tackles Down the Hot Path First
The first sign is usually not dramatic.
No outage. No database on fire. No angry incident channel.
Just a few small signals.
Product pages start loading slower during peak hours. Search feels a little heavier than usual. The database das...
Most System Design Mistakes Hide Between the Boxes
A user clicks Place Order.
The API returns 200 OK. The order appears in the database. The checkout page shows a success message. From the outside, everything looks fine.
Then support gets a ticket.
The customer never received a confirm...
Bad Retries Can Break Good Systems
A user places an order for the last item in stock.
Your API works. Your database works. Your deployment is fine.
But the call to the inventory service takes three seconds too long.
The request times out.
From the Order API’s point of vi...
Event-Driven Systems Are Easy to Build but Hard to Keep Correct
The biggest lie event-driven systems tell is that working infrastructure means a working system.
It does not.
The broker is healthy.
Consumers are online.
Messages are flowing.
Dashboards are green.
And yet, somehow, the business i...
Consistency is negotiable. But the bill always lands somewhere.
In distributed systems, consistency is not something you maximize by default. It is something you buy.
The stronger the guarantee, the more you usually pay in latency, coordination, availability, or operational complexity.
That is why t...
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Authors
The writers behind this newsletter.
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.
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