Added detailed explanation on DNS resolution and TLS handshake #2508
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
In my pull request, I have added a detailed breakdown of the DNS resolution process, TLS handshake, and load balancing mechanisms that occur when a user enters https://www.google.com in their browser and presses Enter.
Key Enhancements:
Expanded DNS Resolution Explanation:
Differentiated Recursive vs. Authoritative DNS queries.
Explained the caching mechanism at browser, OS, ISP, and root level.
Clarified how Google's Public DNS (8.8.8.8) optimizes lookups.
Added TLS Handshake Process:
Step-by-step breakdown of Client Hello, Server Hello, Key Exchange, and Finished handshake.
Explained how TLS encryption secures data in transit.
Mentioned TLS 1.3 improvements (e.g., 0-RTT handshake).
Load Balancing and Traffic Distribution:
Described how Google’s Global Load Balancer (GLB) distributes requests.
Explained how Google's Edge Network/CDN caches content for faster delivery.
Mentioned failover mechanisms and regional data centers.
Database Interaction & Page Generation:
Added details about how Google’s backend servers process requests.
Described how Google fetches index data from its distributed database.
Explained how search results are ranked and rendered dynamically.