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8 load balancing algorithms you should know:


1️⃣ Round Robin:
It sends each new request to the next server in a rotating order.
↳ Useful when all servers have similar capabilities and you want to spread the load evenly.

2️⃣ Least Connections:
It directs traffic to the server with the fewest active connections.
↳ Useful when servers have different workloads, balancing them more efficiently.

3️⃣ Weighted Round Robin:
It gives more requests to servers with higher weights or capacities.
↳ Useful when some servers are more powerful and can handle more traffic.

4️⃣ Weighted Least Connections:
It considers both server capacity and current connections to assign requests.
↳ Useful when servers differ in performance, ensuring a fair distribution.

5️⃣ IP Hash:
It uses the client's IP address to decide which server will handle the request.
↳ Useful to keep a client connected to the same server, which is important for session consistency.

6️⃣ Least Response Time:
It sends requests to the server with the quickest response and fewest connections.
↳ Useful to reduce delays and improve the user experience.

7️⃣ Random:
It picks a server at random for each new request.
↳ Useful when you don't need to consider server load or differences in server capacity.

8️⃣ Least Bandwidth:
It directs traffic to the server using the least network bandwidth at the moment.
↳ Useful when managing network usage is important to prevent congestion.

Image Credits: DesignGurus 

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Petar Ivanov

Helping 100K+ Developers Improve JS, React, NodeJS & Software Architecture Skills • Senior Software Engineer • Author of “The Conscious React” book

Most people misunderstand engineering seniority.
They think it’s about more code, harder problems, bigger systems...

It’s not.

The real difference between Junior, Mid-level, and Senior+ engineers is responsibility and impact.

Junior engineers are paid to learn.
They execute with guidance and ask questions early.

That’s not a weakness.
That’s the job.

Mid-level engineers are paid to own work.
They take features from idea to production and fix what breaks.

This is the hardest level to leave.
Because it feels like progress, but it’s often just comfort.

Senior engineers are paid to decide.
They make trade-offs.
They reduce risk.
They make the team faster, not just themselves.

Here’s the part no one likes hearing:
→ Progression isn’t about stress.
→ It’s about blast radius.

The more senior you are, the more people are affected by your decisions.

That’s why “just being good at code” stops being enough.

If you want to grow:
→ Take ownership before you’re asked
→ Care about outcomes, not tickets
→ Optimise for team impact, not personal speed

Titles follow behaviour.
Not the other way round. 

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