ee4b7305a2
This PR adds all the guides from [Visual Guides](https://bytebytego.com/guides/) section on bytebytego to the repository with proper links. - [x] Markdown files for guides and categories are placed inside `data/guides` and `data/categories` - [x] Guide links in readme are auto-generated using `scripts/readme.ts`. Everytime you run the script `npm run update-readme`, it reads the categories and guides from the above mentioned folders, generate production links for guides and categories and populate the table of content in the readme. This ensures that any future guides and categories will automatically get added to the readme. - [x] Sorting inside the readme matches the actual category and guides sorting on production
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title, description, image, createdAt, draft, categories, tags
| title | description | image | createdAt | draft | categories | tags | |||
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| Why are Content Delivery Networks (CDN) so Popular? | Explore the popularity of CDNs and their impact on performance. | https://assets.bytebytego.com/diagrams/0420-why-cdns-are-so-popular.png | 2024-02-16 | false |
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The CDN market is expected to reach nearly $38 billion by 2028. Companies like Akamai, Cloudflare, and Amazon CloudFront are investing heavily in this area.
The Impact of CDN
CDNs improve performance, increase availability, and enhance bandwidth costs. With the use of CDN, there is a significant reduction in latency.
CDN Request Flow
After DNS resolution, the user’s device sends the content request to the CDN edge server.
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The edge server checks its local cache for the content. If found, the edge server serves the content to the user.
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If not found, the edge server forwards the request to the origin server.
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After receiving the content from the origin server, the edge server stores a copy in its cache and delivers it to the user.
The Architecture of CDN
There are multiple components in a CDN’s architecture:
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Origin Server: This is the primary source of content.
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Edge Servers: They cache and server content to the users and are distributed across the world.
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DNS: The DNS resolves the domain name to the IP address of the nearest edge server
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Control Plane: Responsible for configuring and managing the edge servers.
CDN Request Routing
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GSLB: Routes user requests to the server based on factors like geographic proximity, server load, network conditions
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Anycast DNS: Allows multiple servers to share the same IP address. It helps route incoming traffic to the nearest data center.
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Internet Exchange Points: CDN providers establish a presence at major IXPs, allowing them to exchange traffic directly with ISPs and other networks.
Best Practices
Some key best practices to optimize CDN performance are related to security aspects, caching optimizations, and content optimizations.