O projeto TOFFEE

RESEARCH 》 CDN Introduction - Content Delivery Networks or Content Distribution Networks

A Website without CDN Network: As everyone knows in a most common typical simplest scenario, you will have a website hosted in a web-server. In most common cases a typical small website will be hosted in some web-server, provided by web-hosting service provider. And the website DNS domain name points to this hosting web-server. In a simple scenario like this when the user requests the pages (or in general we can say any content such as text pages, images, and other media), the end-user’s browser request reaches this web-server, and the web-server delivers the web-pages via HTTP Protocol.
CDN Introduction website without CDN

Local user Browser Cache: The process of page or content download is pretty straight forward in a web-browser. A web-browser will have a small local cache. So that if there is any future repetitive requests, instead each time fetching from the main website (web-server), the browser will load/render the pre-cached content directly in the browser interface if it finds that specific content already once stored earlier in its cache. This saves up a lot of traffic. Since most of the times any website will have a lot of common content, such as logos, some Java scripts, CSS Stylesheets and so on. But the only drawback is that if there is a small organization, then each user have to access the content atleast once, so that they get their browser cache stored with content. In this case it is a highly discrete or non-shared cache platform/scenario.

Local web Proxy/Caching Servers: So in a office, or any such setup, where there are N users accessing common Internet resource, we can deploy a common web proxy or caching server(s). These servers (or a server) will create a great opportunity of creating a localized common caching scenario. So in this mode assume if one user accesses a website for first time, assume few of its contents are cached in this caching server, then later that day whichever other user accesses the same content, they may receive cached content from this central caching/proxy server. This is a huge advantage. Once the cache is mature and holds enough cached contents, it will sometimes exponentially reduce the network load, and downloading repetitive data from Internet (or any network in general).

A Website via CDN Network: In this scenario, the main basic website acts much like a source or origin. It will contain the web-content but it will not serve the real end-users. Instead there is going to be a CDN Service provider, and his vast infrastructure with several distributed, so called CDN Nodes across Internet spread globally. When the end-user requests the website, it is these CDN caching nodes will actually server the content to the end users. The job of the CDN service provider is to provide a highly redundant load-sharing along with transparent/abstract infrastructure. The CDN provider will often point or assign a CDN node which is least used at that instance, also sometimes assigns dynamically a CDN Node which is geographically nearer to the end-user. Hence this reduces the download time, since it reduces the number of router hops in internet.
CDN Introduction website with CDN

A CDN Node is often a highly proprietary caching resource installed by the CDN Service provider, where when it gets a request of a content to be served from end-user browsers, it caches the pages/content from its neighboring CDN Nodes, or sometimes directly from the origin web-servers. So this will exponentially reduces the load on the origin webserver. It is like with CDN server, the load on the origin webserver is or can be reduced upto 70-80% or sometimes even more depending on the content nature and depending on static vs. dynamic content it has.

So this is how a basic CDN works, its significance and value addition for any website if it is served to users via CDN, versus served directly via single webserver (or just few redundant web-servers) without a CDN.

Apart from this there are various advantages in using a CDN within your deployments. To know more about CDN Advantages kindly read the full detailed article HERE.

Suggested Topics:

Generic CDN

Building my own CDN

💎 TOFFEE-MOCHA new bootable ISO: Download
💎 TOFFEE Data-Center Big picture and Overview: Download PDF

Tópicos recomendados:

TOFFEE-DataCenter - First Live Demo and software development - Update: 26-Aug-2016 ↗
Saturday' 13-Mar-2021
Today I have done a test setup so that I can able to connect my Android Samsung Tab via TOFFEE DataCenter. Below is my complete test topology of my setup. For demo (and research/development) context I configured TOFFEE DataCenter in engineering debug mode. So I do not need two devices for this purpose.

Building my own CDN - Moving away from Joomla to non-Joomla website - Update: 01-Oct-2016 ↗
Saturday' 13-Mar-2021
Seems there are couple of Inmotionhosting servers are down. And one of the server includes The TOFFEE Project website hosted server. I was in touch with the Inmotionhosting team trying to resolve the same. I found a unique issue that all my website files are intact and the Joomla database. But the Joomla database tables are completely wiped out and missing. Besides there is also a sort of upgrade going on in their servers. Luckily I have the most recent backup of the entire website.

PiPG - Raspberry Pi Network Packet Generator ↗
Saturday' 13-Mar-2021
PiPG is a powerful and yet simple Raspberry Pi Network Packet Generator. With PiPG you can now fabricate custom network packets and send via any Network Interface. Supports all kinds of standard Network Ports (Linux Kernel driver generated) such as Physical Network Interface ports, and an array of virtual ports such as loopback, tun/tap, bridge, etc. indispensable tool for: Network Debugging, Testing and Performance analysis Network Administrators Students Network R&D Protocol Analysis and Study Network Software Development Compliance Testing Ethical Hackers you can generate the following test traffic: L2-Bridging/Slow protocols: STP, LACP, OAM, LLDP, EAP, etc Routing protocols: RIPv1, RIPv2, IGMPv1, IGMPv2, OSPF, IS-IS, EIGRP, HSRP, VRRP, etc Proprietary protocols: CISCO, etc Generic: IPv4 TCP/UDP, etc Malformed random packets

Skype VOIP Data - WAN Acceleration ↗
Saturday' 13-Mar-2021

The TOFFEE Project :: TOFFEE-Mocha :: WAN Emulator ↗
Saturday' 13-Mar-2021
The TOFFEE Project :: TOFFEE-Mocha :: Linux Open-Source WAN Emulator

TOFFEE-Butterscotch a TOFFEE for Home/SOHO Internet/WAN bandwidth ↗
Saturday' 13-Mar-2021
TOFFEE-Butterscotch a TOFFEE for Home/SOHO Internet/WAN bandwidth

TOFFEE-Butterscotch Documentation :: TOFFEE-Butterscotch-1.0.11-rpi2-23-nov-2016 ↗
Saturday' 13-Mar-2021
TOFFEE-Butterscotch Documentation :: TOFFEE-Butterscotch-1.0.11-rpi2-23-nov-2016

TEST CASES :: TEST RESULTS :: TOFFEE-Mocha-1.0.14 Development version ↗
Saturday' 13-Mar-2021

iPerf Network Optimization - WAN Optimization Demo ↗
Saturday' 13-Mar-2021

TOFFEE-Mocha WAN Emulator Jitter Feature ↗
Saturday' 13-Mar-2021

Featured Educational Video:
Assista no Youtube - [8603//1] x254 Kernel Init Code without Kernel Module - Kernel Programming Tip #linode ↗

TOFFEE-Mocha-1.0.32-1-x86_64 and TOFFEE-Mocha-1.0.32-1-i386 Code Release ↗
Saturday' 13-Mar-2021
This is my first TOFFEE-Mocha combined x86-64 and i386 (Intel x86 64-bit and 32-bit) code release.

TOFFEE (and TOFFEE-DataCenter) optimized Mobile Wireless Backhaul Networks ↗
Saturday' 13-Mar-2021
TOFFEE can be used to optimize expensive Wireless backhaul network infrastructure. TOFFEE can be deployed over existing slow or often outdated old backhaul networks too. This will leverage mobile ISPs and network service providers to reduce their bulk IT CapEx and OpEx Costs.

Setting up a WAN Emulator within VirtualBox ↗
Saturday' 13-Mar-2021

iPerf Network Optimization - WAN Optimization Demo ↗
Saturday' 13-Mar-2021

A study on WAN Optimization Techniques ↗
Saturday' 13-Mar-2021
There are various techniques with which one can optimize their WAN Network Data. Any long distance communication can be considered as WAN Network. A decade ago any network connecting two countries, considered as a WAN network, and a network within a city as MAN and soon. But these days in general any long distance communication is considered as WAN Network. Such as your Mobile communication networks, Satellite networks, Space Networks (Deep space networks), Trans-Atlantic cable networks, etc.

Research :: Optimization of network data (WAN Optimization) at various levels:
Network File level network data WAN Optimization

Learn Linux Systems Software and Kernel Programming:
Linux, Kernel, Networking and Systems-Software online classes [CDN]

Hardware Compression and Decompression Accelerator Cards:
TOFFEE Architecture with Compression and Decompression Accelerator Card

TOFFEE-DataCenter on a Dell Server - Intel Xeon E5645 CPU:
TOFFEE-DataCenter screenshots on a Dual CPU - Intel(R) Xeon(R) CPU E5645 @ 2.40GHz - Dell Server