Load Balancing: Round Robin vs. Smart Routing vs. Service Mesh

This decision page will help you decide which approach to load balancing and traffic routing to use for your application or system.

Answer a few questions → Get a clear recommendation.

Options you can choose from:

Round Robin

Sends each new request to the next server in turn, spreading the load evenly. Best for simple setups where all servers are equal and each request is independent.

Smart Routing

Sends requests to the server that is best suited at that moment based on how busy each server is or whether it is healthy, making it better suited for systems where servers may differ in capacity.

Service Mesh

Adds a small helper process alongside each service that automatically handles routing, security, retries, and monitoring. It is powerful but complex and requires a container management system like Kubernetes.

Answer a few simple questions below. 👇

Based on your answers, you will receive specific recommendations that you can click on to view in detail.

Decision questions

Answer honestly based on the current needs of your application or system.

1. What is the size and complexity of the system?

2. How should your system decide which server gets the next request?

3. Where and how do your services run?

4. How much visibility and security do you need between your services?

5. What team and expertise do you have available?

Result

Based on your answers, see the recommended solution below. 👇

Each option has its own page where you will find:

  • when it is appropriate
  • when it is not
  • typical usage
  • most common mistakes
Round Robin
When to use it, common mistakes & best practices
→
Smart Routing
When to use it, common mistakes & best practices
→
Service Mesh
When to use it, common mistakes & best practices
→

Important note

⚠️ Decide based on system complexity and team experience.

In practice, they are often combined: Round Robin for simple services and Smart Routing or Service Mesh for critical systems with many independent services.

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