Creating GCP HTTP Load Balancing

Dive into the architecture and workflow of Google Cloud's HTTP Load Balancer, understand its components, benefits, and common challenges. Explore how traffic flows in a highly available web application setup.

Start Exploring Workflow â–ŧ

Traffic Flow: Step-by-Step

This section illustrates the journey of an HTTP request through the GCP Load Balancer setup. Use the navigation buttons to move through each stage and observe the active components and the flow.

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User
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Global Static IP
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Forwarding Rule
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Target HTTP Proxy
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URL Map
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Backend Service
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Health Check
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Instance Group
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VM Instances
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GCP Components Overview

Understand the individual roles of each Google Cloud Platform service within the load balancing architecture. Click on any component to reveal its detailed description and purpose.

Virtual Private Cloud (VPC) & Subnet

Logical network and IP range to contain resources.

Firewall Rules

Allow ingress traffic on ports 80 (HTTP) and 22 (SSH).

VM Instances (Web Servers)

Web servers configured with Apache and a unique index.html.

Unmanaged Instance Group

Connects the VMs to the backend service.

HTTP Health Check

Ensures only healthy VMs receive traffic.

Backend Service

Connects the instance group to the load balancer.

URL Map

Routes incoming HTTP traffic to the correct backend.

Target HTTP Proxy

Uses the URL map to forward requests.

Forwarding Rule

Listens for external traffic and routes it to the proxy.

Reserved Global Static IP Address

Public global IP used to access the application.

GCP HTTP Load Balancer: Step-by-Step Setup Guide (Free Tier Compliant)

This section provides a detailed, Free Tier-compliant guide to deploying an HTTP Load Balancer on Google Cloud Platform, focusing on a single-zone setup. Follow these steps to build your highly available web application.

Why Load Balancing Matters

Load balancing is indispensable for modern web applications. Discover the key advantages and diverse applications that make it a crucial architectural decision.

Common Use Cases

🛒 E-commerce Platforms

Essential for handling traffic spikes during sales events, ensuring smooth checkout processes.

â–ļī¸ Streaming Services

Distributing video and audio content to millions of users efficiently across global data centers.

🔌 API Gateways

Managing and routing requests to various microservices within a complex application architecture.

🎮 Online Gaming

Distributing player connections across multiple game servers to maintain low latency and high performance.

Common Challenges & Solutions

Encountering issues during setup is common. This section provides quick solutions to the most frequently faced problems with GCP HTTP Load Balancers.