MD ASIF RAZA

Sr Full Stack Software Eng | Microservices | AI/ML | React | Node | NextJs | AWS | Cloudflare | building MVP's
Let's connect👉

[MD ASIF RAZA @_mdasifraza]

API server becomes slow

API normally responds in: 50ms
Suddenly:

p50 = 50ms
p95 = 200ms
p99 = 3000ms

event-loop lag = 2.5 seconds

possible case:
- CPU-heavy task
- sync API
- large JSON parsing/stringifying
- GC pressure
- microtask starvation
- too much work on main thread

[MD ASIF RAZA @_mdasifraza]

5. Event-loop Lag — Detect delayed execution

Lag is the observable symptom:

Expected callback time
↓
100ms

Actual callback time
↓
2500ms

Lag
↓
2400ms

[MD ASIF RAZA @_mdasifraza]

Prevention

Use:

request body limits
streaming parsers where appropriate
pagination
chunking
worker threads for expensive transformations
avoid unnecessarily serializing huge objects

app.use(express.json({ limit: "1mb"}));

[MD ASIF RAZA @_mdasifraza]

Event-loop Blocking

https://t.co/ylkNecSZ9a("/data", express.json(), (req, res) =>
{
// process huge object
});

Parsing JSON is CPU work.

For a very large payload:
Network
↓
JSON.parse()
↓
large CPU operation
↓
Event loop blocked

#devs

[MD ASIF RAZA @_mdasifraza]

Vibe coding is incredible for validation.
It can turn weeks of work into hours.

For a production-ready product needs.
↳ Infrastructure
↳ DB
↳ Caching
↳ Queues & async jobs
↳ Security
↳ Scaling

No need to build all of these on day one.
But you do need to know they exist.

[MD ASIF RAZA @_mdasifraza]

Solo founders — let’s connect.

Building alone is hard. Let's grow together.

If you’re building or exploring:

↳ SaaS
↳ AI tools
↳ Automation
↳ Indie hacking
↳ Dev & tech

Let’s connect, share , and grow together.
#buildinpublic #solofounder #SaaS #AI

[MD ASIF RAZA @_mdasifraza]

Hi, I’m ASIF,

I’m back on X and looking to #connect with more people here who are In:

• Tech
• AI/ML
• Creators
• Founders
• Entrepreneurs
• Marketing minds

I’d love to connect, learn and share along the way. If you’re one of them.
#connect

[MD ASIF RAZA @_mdasifraza]

What should an AI agent be allowed to do without approval?

A) Suggest
B) Draft
C) Execute
D) Decide
Most people want C.
Most businesses still trust A.
The real challenge with AI agents isn’t intelligence.

It’s trust.

[MD ASIF RAZA @_mdasifraza]

Hey, @X algorithm!

Looking to #connect with people interested in:

Tech
AI / ML
Web & App Development
UI/UX Design
DevOps & Cloud
SaaS & Product Building
Open Source

If you’re building, learning, or shipping something,

let’s #connect

#Connect #Tech #AI #WebDevelopment #SaaS

[MD ASIF RAZA @_mdasifraza]

Hey there!

Looking to #connect with founders.

SaaS products
AI agents
Web app
Mobile app
APIs & backend
Startup MVPs

let’s connect #connect.

Have a project in mind? Drop it below or DM me. 💬

#FreelanceDeveloper #WebDevelopment #SaaS #AI #Startups #MVP #BuildInPublic

[MD ASIF RAZA @_mdasifraza]

Microservices split:
Identify the specific endpoints causing high ELU and extract them into independent, auto-scaling microservices.

Cache heavily:
Implement Redis or memory caching to avoid executing the same data-processing JavaScript code repeatedly for identical requests.

[MD ASIF RAZA @_mdasifraza]

Node.js Performance Bottlenecks: From Starvation to Event-Loop Utilization.
1. Optimizing Execution Ordering.
2. Preventing Starvation
3. Eliminating Event-Loop Blocking
4. Reducing Event-Loop Lag
5. Managing Event-Loop Utilization (ELU)

https://t.co/P3YKIF9MYa
#NodeJs

[MD ASIF RAZA @_mdasifraza]

Optimization & Prevention:Scale Horizontally (Clustering): Utilize Node's native cluster module or a process manager like PM2 to spawn an instance of your app for every available CPU core.