Ali AK

Software Engineer | Full-Stack & AI Engineer | Founder @ Muhsan | Building SaaS & Scalable Platforms

[Ali AK @Eng_ALIAK]

@bot @bot set it for me

[Ali AK @Eng_ALIAK]

@RAHULKESHR31818 cross tenant cache leaks are the scariest bug in SaaS

nothing crashes
no error
just user A quietly seeing user B data

tenant id in every cache key no exceptions

[Ali AK @Eng_ALIAK]

@Prayag12B add the column nullable first
backfill in small batches by id range
commit each batch
sleep between them

[Ali AK @Eng_ALIAK]

@premwomp 🤣🤣🤣🤣🤣

[Ali AK @Eng_ALIAK]

@ZidaneZ08902030 same lesson here

202 fast then queue
and a unique constraint on the event id so 47 retries become 1 row not 47 side effects

[Ali AK @Eng_ALIAK]

@atomicai_ch @patio11 solid habit

i add one more line to that list
what happens when the same request hits twice

[Ali AK @Eng_ALIAK]

@LayerbaseDB 15 ms with open transactions intact is wild

curious how you handle a client in the middle of a COPY or a long query during the handoff

[Ali AK @Eng_ALIAK]

@kentcdodds ADRs are the unlock

i write the decision once
agents stop reinventing auth caching and deploy rules every session

[Ali AK @Eng_ALIAK]

@kentcdodds felt this

token in chat and cron on a laptop is how demos die at 3am
i moved production agents to persistent workers with logged retries and clear ownership

[Ali AK @Eng_ALIAK]

@rauchg @bcherny this matches what i see shipping production SaaS

agents write the first version fast
the hard part is still auth edge cases race conditions and the bug that only shows under real traffic

[Ali AK @Eng_ALIAK]

most early SaaS doesnt need Redis

it needs Postgres done right
indexes
clear queries
and someone watching p95

[Ali AK @Eng_ALIAK]

best devops school is your own production box at 2am

Docker Nginx Postgres logs
no tutorial prepares you for that

[Ali AK @Eng_ALIAK]

hot take for backend builders

if your app needs Redis on day one you probably dont understand your traffic yet

Postgres + good indexes + honest observability gets you surprisingly far

[Ali AK @Eng_ALIAK]

built production systems that process 1000+ orders a day and serve 100k+ students

still just one guy shipping Go Node Postgres Docker from the ground up

the bottleneck was never syntax it was decisions

[Ali AK @Eng_ALIAK]

@elonmusk This idea has been in my head for a long time and I finally found a mind like Elon Musk who actually built it 🤯 I tried Grok with Cursor for the first time and Grok having its own server is insane Now I get why Elon is competing with Sam Altman and Anthropic