Tejas A.

Backend-Focused Full-Stack Developer | GenAI

[Tejas A. @TEJAS_DEV_code]

You don't have a forgetting problem.
You have a remembering problem.

Introducing DailyBrief — an AI memory assistant that works through WhatsApp.

Send messages naturally. It remembers what matters and brings it back when you need it.

[Tejas A. @TEJAS_DEV_code]

@_Creation22 @uncensored_ai Congrats 🎉

[Tejas A. @TEJAS_DEV_code]

@ChaiCodeHQ @nirudhuuu 🔥

[Tejas A. @TEJAS_DEV_code]

@hecodesforme 🤝

[Tejas A. @TEJAS_DEV_code]

One failed database operation can leave an order half-created.

I tested this with PostgreSQL + Prisma today.

Created an order.
Created its items.
Updated stock.

Then I deliberately threw an error.

What happened next? 🧵

[Tejas A. @TEJAS_DEV_code]

@sidhar_dev Exactly 👍

[Tejas A. @TEJAS_DEV_code]

@hecodesforme thanks nice suggestions btw i have already explored the last-unit-in-stock race using concurrent transactions

[Tejas A. @TEJAS_DEV_code]

@hecodesforme All three rolled back cleanly. I threw an error intentionally and verified that none of the changes persisted.

[Tejas A. @TEJAS_DEV_code]

@krrishvardhan @wjshubham @ChaiCodeHQ @Hiteshdotcom @BlazeisCoding @yntpdotme @nirudhuuu Congratulations bro 🔥

[Tejas A. @TEJAS_DEV_code]

Day 3 takeaway:

Using an ORM isn't just replacing SQL with methods.

It's learning how to shape data, handle missing records, group writes atomically, and reason about failures.

The real test isn't whether the happy path works.

It's what happens when something breaks.

[Tejas A. @TEJAS_DEV_code]

But there's another catch.

A transaction alone doesn't automatically prevent every race condition.

If 2 requests try to buy the last item, both might read stock = 1 before either updates it.

Production code needs concurrency-safe stock updates, not just a transaction.

[Tejas A. @TEJAS_DEV_code]

@SinghDevHub 🔥

[Tejas A. @TEJAS_DEV_code]

@Samrat4488 @Hiteshdotcom @piyushgarg_dev @nirudhuuu Congrats bhai 🥳

[Tejas A. @TEJAS_DEV_code]

@parascodes Congrats🎉

[Tejas A. @TEJAS_DEV_code]

@nirudhuuu @Hiteshdotcom 🔥

[Tejas A. @TEJAS_DEV_code]

@ChaiCodeHQ 🤩

[Tejas A. @TEJAS_DEV_code]

@manjhss Gpt

[Tejas A. @TEJAS_DEV_code]

I deleted one index from a 100k-row table.

Query time: 0.13ms → 5.3ms.

Then I deadlocked my own database on purpose.

Day 2 of my PostgreSQL backend lab: 5 lessons on what happens when requests collide 🧵