Radi | dev👨🏽‍💻

Software Engineer || AI

[Radi | dev👨🏽‍💻 @radi_dev]

Hello world,
this is my first real tweet, and it is not “real”.
Last weekend, I took time to learn back-end development using NodeJs after several years of doing so solely in Python(Django). It didn’t take time at all. But to be sure I actually learned anything, ...

[chinedu🦀 @chinedu_10]

It’s always important to take a step back and think of a real world situation when approaching/answering this technical questions.

[Radi | dev👨🏽‍💻 @radi_dev]

@abhitwt Hi.
I build GenAI apps and code automation workflows.
I occasionally work on full-stack web projects, but I prefer backend and CLI app development.

[Radi | dev👨🏽‍💻 @radi_dev]

@KwekuFlick @sarkodie
It may please you to know that my 2025 most-played song from wrapped was 'Messiah'.
But why is this song no longer available on Spotify?
Return am abeg.
Add Lyrics to it too, if you fit.

#BringBackMessiah #spotifywrapped #Afrobeats

[Radi | dev👨🏽‍💻 @radi_dev]

@manixh We get on a call. I dictate all the keys. 😂😂😂

[girlInTech @ShradhaGhai]

Does “WhatsApp” use WebSockets or gRPC?

Short answer: No.

What WhatsApp uses

WhatsApp uses a custom messaging protocol built on top of MQTT over TCP/TLS.

What is MQTT?

MQTT (Message Queuing Telemetry Transport) is a lightweight publish–subscribe messaging protocol designed for:
•Low bandwidth networks
•High latency or unreliable connections
•Devices that need to stay connected with minimal battery usage

It was originally built for IoT, but its design fits mobile messaging extremely well.

How it works (high level)
•Each device maintains a persistent TCP connection to WhatsApp servers
•Messages are sent as binary payloads (not JSON)
•Uses acknowledgements to guarantee delivery
•Automatically recovers from network drops
•TLS is used for transport security (along with end-to-end encryption)

Why not WebSockets?
•Extra overhead for mobile networks
•Less battery-efficient at WhatsApp scale
•Not designed for intermittent connectivity

Why not gRPC?
•Best suited for backend microservices
•Not optimized for billions of client connections
•Browsers and mobile apps aren’t its primary target

TL;DR
•Browser apps → WebSockets
•Backend microservices → gRPC
•Massive mobile chat apps → Custom TCP + MQTT-style protocols

That’s how WhatsApp stays fast, reliable, and battery-friendly at scale.

[ℏεsam @Hesamation]

bro packaged math and programming into a game and 1000s of people are playing it on steam.

this looks so cool 🤯

[Radi | dev👨🏽‍💻 @radi_dev]

@missusmonsta @udreams30 @RealAlexJones Again, everyone is ignoring this comment pointing out the obvious.

I don't know anyone in the video, but the man is clearly evading the point. The woman says he can sue, but not take profits from the suits.

Everyone is just here saying she wants him to not sue. Smh

[Radi | dev👨🏽‍💻 @radi_dev]

@HalalAbdul_ And na downstairs

[Radi | dev👨🏽‍💻 @radi_dev]

@49Brick @InterestingSTEM Mine too

[Radi | dev👨🏽‍💻 @radi_dev]

Everytime I see "sudo", my mind goes into a battle of how to pronounce it; sudo as in Judo? Or sudo as in voodoo? Considering the fact that it actually means "superuser do".

[Hernando Abella @hernandoabella]

what does this command do folks?

[Radi | dev👨🏽‍💻 @radi_dev]

@pikaso_me @BadmosO39546 @espeezeal @ma_ky__ @instablog9ja This screenshot com get k-leg
😂

[Radi | dev👨🏽‍💻 @radi_dev]

@InterestingSTEM Bill "Blue screen of death" gates. 😂😂😂😂

[Radi | dev👨🏽‍💻 @radi_dev]

@RandomTheGuy_ @LibertyCappy How's it both on the left and the right though?

[Radi | dev👨🏽‍💻 @radi_dev]

@blochief @OneJoblessBoy Nice marketing.
The comment really was bait.

[Radi | dev👨🏽‍💻 @radi_dev]

"What is common to you might be mind-blowing to others"
- Something I need to remember every day. 😪

[Name cannot be blank @hackSultan]

I’m about to pull one Mr beast shiii right now for all my followers…..

At 2PM WAT today.
RT and reply YES if you’re in.

I’ll lock this comment section by 2PM before making the new tweet, if you’re not in here, you don’t qualify…….

[delty @DeltyThe73rd]

TRANSFORMERS SHOULD TAKE NOTES

[Radi | dev👨🏽‍💻 @radi_dev]

@DeadEyes1123 @groovycodi @HoIIandMedia @violent_clips No other country?
Hahaaa.

[Radi | dev👨🏽‍💻 @radi_dev]

Learning #Golang updates.
One of the questions I have come up with about modules: "How do I import my things from other modules in the project?". I get that the exported function names need to start with upper case
#LearningJourney #SoftwareEngineering
https://t.co/bkSYnesuJN

[Radi | dev👨🏽‍💻 @radi_dev]

Funny thing about my learning of #Golang.

I'm using the approach where I read a little about a topic and then tinker around to figure out the rest or come up with questions for things I can't figure out. From my tinkering, I already have these answers... and questions:

[Radi | dev👨🏽‍💻 @radi_dev]

@TrendingEx So sad. May their souls rest in peace.