@testdrivenio

Teaching practical programming through real-world applications. Tweets by @MikeHerman and @JanGiacomelli.

Denver, CO
Joined December 2017
TestDriven.io retweeted
The best thing you can bring to the table is clarity. Even more so in the age of AI.
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TestDriven.io retweeted
Today’s read: why Uber moved from Postgres to MySQL. Really interesting deep dive into the database internals and scaling problems that led to the decision. For Uber, things like MVCC, replication, WAL, and write amplification became serious scaling challenges. The interesting part is how they solved it. One of those reads that makes you look at databases differently. uber.com/in/en/blog/postgres…
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It's insane how people sleep on SQLite in production. It's the absolute cheat-code. The fastest db money can buy. Infinitely scalable. All queries are 90% faster than a single roundtrip to Supabase. Literally unbeatable. Why wouldn't you start every single app with SQLite?
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TestDriven.io retweeted
[PSF]Announcing the PSF Strategic Plan 2026 The plan adds security baseline and vulnerability-management objectives, expands accessibility to include translation and localization, and clarifies funding pathways and membership value and more. #djangonews pyfound.blogspot.com/2026/09…
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TestDriven.io retweeted
GraphQL exists because getting the backend team to add three fields to an endpoint was harder than inventing a query language.
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TestDriven.io retweeted
new post: the senior engineer death spiral sunilpai.dev/posts/the-senio… a friend just started a big job and asked for some advice. so I braindumped a monologue about a super common failure mode I see with engineers and posted it here, hope it helps whoever it can.
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TestDriven.io retweeted
Meet us in Riverside for DjangoCon US 2027! 📅 September 13–17, 2027 📍 Riverside, California Five days of learning, inspiration, networking, and community. Get your ticket: ti.to/defna/djangocon-us-202… #DjangoConUS #Django #Python
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TestDriven.io retweeted
y'all realize an MCP server is just an API that describes itself right?
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TestDriven.io retweeted
A lot of software doesn’t need a rewrite. It needs someone to delete 30% of it, remove two dependencies, rename the confusing bits and stop adding features for a month😂
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TestDriven.io retweeted
One of the worst things that AI has done in software is convinced low-skill individuals that software engineering is solved and is instantly producible. They then in turn project their unrealistic expectations onto others.
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TestDriven.io retweeted
At the end of the day, it's just software. Go outside, touch some grass, and log off.
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TestDriven.io retweeted
The better the tests, the faster you can ship. Even more so when agents are writing the code. This course teaches you how to get to such tests testdriven.io/courses/python…
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TestDriven.io retweeted
I highly recommend to read at least one technical blog per day or even per week ... the amount of depth you can get in your conversations with interviewer/friends/seniors solely from this highly appreciable
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TestDriven.io retweeted
Storing Django Static and Media Files on Cloudflare R2 bit.ly/467urvS
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