RYAN ZERNACH

Senior AI Systems Engineer

Ryan_Zernach_2025_Senior_AI_Systems_Engineer_Remote_United_States

BUILDING RELIABLE

HEALTHCARE AI

SCALING PRODUCTION

LLM SYSTEMS

ENGINEERING TRUSTED

AI INFRASTRUCTURE

DELIVERING INTELLIGENT

PATIENT IMPACT

🌐 The Journey of Loading a Webpage

What happens when you type example.com into your browser and press enter?

🌐 The Journey of Loading a Webpage

Summary

Although it may seem like a simple action, the journey of loading a webpage involves dozens of complex systems working together in harmony. Understanding this process helps developers optimize performance, debug issues, and build better web experiences.

Step 1 - URL Parsing

Breaking down the URL into its components

Step 2 - Browser Cache Check

Checking local storage before making network requests

Step 3 - DNS Resolution

Converting domain names to IP addresses

Step 4 - TCP Connection

Establishing a reliable connection with the server

Step 5 - TLS Handshake

Establishing a secure encrypted connection (HTTPS only)

Step 6 - HTTP Request

Sending the request to the server

Step 7 - Server Processing

How the server handles your request

Step 8 - HTTP Response

The server sends back the requested resource

Step 9 - Browser Rendering

Converting HTML, CSS, and JavaScript into a visual webpage

Additional Considerations

Beyond the core steps, several other processes enhance the web experience:

JavaScript Execution

Dynamic behavior and interactivity

Resource Loading

Fetching additional assets

Security Considerations

Protecting users and data