Wiki Article · Cinematic

ETag

ETag (Entity Tag) ek HTTP response header hai jo kisi resource (page, image, API response) ka…

Overview

ETag — Quick Facts

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Property: Detail

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Full Name: Entity Tag

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Type: HTTP Response Header

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Specification: RFC 7232 (HTTP/1.1 Conditional…

Topic 1

Kya Hai ETag

📚 Jab server koi resource serve karta hai (HTML page, image, JSON response), wo response…

Topic 2

Strong vs Weak ETags

💡 | Type | Format | Meaning | Use Case | |---|---|---|---| | Strong ETag | "abc123" |…

Topic 3

ETag vs Last-Modified

🎯 | Aspect | ETag | Last-Modified | |---|---|---| | Precision | Content hash — byte-level…

Topic 4

ETag in REST APIs

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Client stores ETag from previous…

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Next request: If-None-Match:…

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Client GETs resource: receives…

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Client PUTs update: sends…

Topic 5

HTTP Headers Involved

🔑 | Header | Direction | Purpose | Example | |---|---|---|---| | ETag | Response | Resource…

Topic 6

Best Practices

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Generate ETags from content hash:…

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Use strong ETags for static files:…

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Use weak ETags for dynamic pages:…

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Implement If-Match for writes:…

Comparison

Strong vs Weak ETags

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Strong ETag: "abc123"

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Weak ETag: W/"abc123"

Comparison

ETag vs Last-Modified

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Precision: Content hash — byte-level…

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Type: Opaque string (server decides…

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Request header: If-None-Match

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

ETag ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

ETag ka 'Full Name' kya hai?

Complete! 🎉

ETag Complete!

Aliens Wiki · HIEN · Cinematic Knowledge

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ETag Complete

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ETag

ETag — Quick Facts

Property: Detail

Full Name: Entity Tag

Type: HTTP Response Header

Specification: RFC 7232 (HTTP/1.1 Conditional…

Kya Hai ETag

Strong vs Weak ETags

ETag vs Last-Modified

ETag in REST APIs

Client stores ETag from previous…

Next request: If-None-Match:…

Client GETs resource: receives…

Client PUTs update: sends…

HTTP Headers Involved

Best Practices

Generate ETags from content hash:…

Use strong ETags for static files:…

Use weak ETags for dynamic pages:…

Implement If-Match for writes:…

Strong vs Weak ETags

Strong ETag: "abc123"

Weak ETag: W/"abc123"

ETag vs Last-Modified

Precision: Content hash — byte-level…

Type: Opaque string (server decides…

Request header: If-None-Match

Visual Flow

See Also

HTTP

Cache

CDN

REST_API

HTTP_header

HTTP_status_code

Quiz — Question 1

Quiz — Question 2

ETag Complete!

ETag Complete

HTTP