Você está se perguntando o que é uma CDN ou “rede de distribuição de conteúdo” e por que ela é importante para o seu site?
Se você deseja acelerar seu site WordPress, uma CDN é uma ferramenta extremamente valiosa. Ela entrega rapidamente o conteúdo ao usuário final em diferentes locais e melhora a experiência do usuário.
Neste artigo, mostraremos por que você precisa de uma CDN para seu blog WordPress.
Infográfico
Para saber o que é uma CDN, basta clicar na imagem acima para ver o infográfico. Você também pode continuar lendo nosso artigo para obter detalhes por escrito.
Observação: só para esclarecer, uma CDN é algo que você usa além de ter uma conta de hospedagem na Web porque ajuda a acelerar as coisas.
Uma CDN não substitui uma conta de hospedagem na Web, pois você ainda precisa ter um provedor de hospedagem como SiteGround ou Bluehost.
O que é uma CDN?
CDN é a abreviação de Content Delivery Network, que é uma rede de servidores que fornece conteúdo estático em cache de sites para usuários com base na localização geográfica do usuário.
Se isso parece muito complicado, vamos explicar em palavras mais simples.
Como funciona uma CDN?
Normalmente, quando um usuário acessa seu blog WordPress, o navegador dele faz o download do site do servidor do seu host, como Bluehost, SiteGround ou HostGator. O servidor do seu host da Web está localizado em um local físico, por exemplo, Houston, Texas.
Isso significa que todos os usuários estão acessando esse único servidor no Texas para visualizar seu site WordPress. Agora, se você tiver um grande volume de tráfego, poderá sobrecarregar o servidor, o que resultará em um site de carregamento lento ou até mesmo em uma falha do servidor.
É nesse ponto que uma CDN é útil. Uma CDN é uma rede de servidores espalhados por todo o mundo. Quando você usa uma CDN, seu conteúdo estático é armazenado em cache e em todos esses servidores.
O conteúdo estático inclui imagens, folhas de estilo(arquivos CSS), JavaScript e muito mais. Quando um usuário visita seu site, a tecnologia CDN o redireciona para o servidor mais próximo de sua localização.
Por exemplo, se o seu servidor principal estiver hospedado em Houston, Texas, e alguém de Durham, Inglaterra, tentar acessá-lo, essa pessoa será redirecionada para o servidor mais próximo, que pode estar em Londres.
Isso limita o número de saltos na Internet necessários para transmitir os arquivos estáticos ao usuário final. Como o computador do usuário está mais próximo do servidor CDN, os arquivos serão carregados mais rapidamente.
Ao ter seu conteúdo disponível em vários servidores em todo o mundo, você pode fazer com que suas páginas carreguem mais rapidamente do ponto de vista do usuário. Em palavras simples, quanto mais próximo o servidor CDN estiver do local onde o usuário está, mais rápido ele receberá o conteúdo.
Você pode estar se perguntando se vale a pena usar uma CDN em seu site. Vamos ver por que você precisa dela para o seu blog WordPress.
Por que você precisa de uma CDN para seu blog WordPress?
Ter uma CDN pode afetar o desempenho do seu site e melhorar a experiência do usuário. Veja a seguir algumas das vantagens de usar uma CDN:
- Velocidade – uma CDN ajuda a melhorar o tempo de carregamento da página do seu site e a torná-lo mais rápido.
- Resistência a falhas – o uso de uma CDN permite que você distribua a carga para vários servidores em vez de ter 100% do tráfego em nosso servidor principal, o que diminui a probabilidade de falhas.
- Experiência do usuário aprimorada – Com uma CDN tornando seu site mais rápido, você notará uma redução na taxa de rejeição do site. Ela também aumenta o número de páginas visualizadas por cada usuário. Claramente, um site rápido significa uma melhor experiência do usuário.
- Melhoria no SEO – o Google declarou que sites mais rápidos tendem a ter uma classificação mais alta nos mecanismos de pesquisa. Uma CDN pode impulsionar o SEO do WordPress e ajudá-lo a obter classificações mais altas de palavras-chave.
Qual é a melhor CDN para WordPress?
Há muitos serviços de CDN para WordPress no mercado. Recomendamos o Bunny.net como o melhor provedor de CDN a ser usado em seu site WordPress. Eles têm servidores espalhados por todo o mundo e oferecem planos de preços acessíveis.
Se você estiver procurando um serviço de CDN que também ofereça recursos de segurança, sugerimos usar o Cloudflare. Eles oferecem um poderoso firewall e CDN para WordPress para proteger seu site de diferentes ameaças e, ao mesmo tempo, garantir tempos de carregamento rápidos.
A Sucuri é outra ótima opção para uma CDN que oferece recursos de segurança. No entanto, talvez você queira ler esta postagem sobre os motivos pelos quais o WPBeginner mudou do Sucuri para o Cloudflare.
Guias especializados relacionados ao desempenho do WordPress
Agora que você sabe como uma CDN pode acelerar seu site, talvez queira ver outros guias relacionados ao desempenho do WordPress:
- O guia definitivo para aumentar a velocidade e o desempenho do WordPress
- Como acelerar o desempenho do WooCommerce
- Métricas importantes para medir em seu site WordPress
- Como executar corretamente um teste de velocidade do site
- Como usar o plug-in GTmetrix para melhorar o desempenho do site WordPress
- Hospedagem WordPress mais rápida (testes de desempenho)
- Melhores serviços de CDN para WordPress (comparados)
- Como configurar a CDN gratuita da Cloudflare no WordPress (passo a passo)
Esperamos que este artigo tenha ajudado a entender por que você precisa de uma CDN para seu blog do WordPress. Talvez você também queira ver nosso guia sobre como obter um certificado SSL gratuito para seu site WordPress e nossas escolhas de especialistas para os melhores plug-ins do WordPress para sites comerciais.
Se você gostou deste artigo, inscreva-se em nosso canal do YouTube para receber tutoriais em vídeo sobre o WordPress. Você também pode nos encontrar no Twitter e no Facebook.
Syed Balkhi says
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Did you know you can win exciting prizes by commenting on WPBeginner?
Every month, our top blog commenters will win HUGE rewards, including premium WordPress plugin licenses and cash prizes.
You can get more details about the contest from here.
Start sharing your thoughts below to stand a chance to win!
Kam says
Thanks for this helpful article.
I am with Bluehost and recently I selected CDN and noticed that my website was loading much faster. But, some users could not access my website as the following message came up:
ERR_SSL_UNRECOGNIZED_NAME_ALERT
I got Bluehost to revert back to my original setting. Is their a way around this?
WPBeginner Support says
You would want to reach out to BlueHost’s support and they should be able to assist.
Administrador
Abdullah says
Hello
will I be losing all my blog posts if I changed my host from Hostgator to CDN network?
WPBeginner Support says
No, you wouldn’t lose your posts when using a CDN
Administrador
Chittar says
So far following great. Just have to work on it.
Thanks for the fluid writing!
WPBeginner Support says
Glad you like our writing
Administrador
Syed Mujtaba says
you have told all about max cdn, where is Cloud fare?
WPBeginner Support says
Hi Syed,
Please checkout how to setup Cloudflare free CDN in WordPress.
Administrador
Jim Boult says
Thank you for clarifying the purpose of a CDN. A very straightforward and easy to understand explanation. wpbeginner is a great resource and I’m starting to appreciate your value to the WordPress community!
Gagan says
Can you please compare some Free CDN service for low traffic site which can’t afford services like MAX CDN. Cloudflare, Incapsula and Amazon are offering free cdn but don’t know which one to choose.
Jen Street says
Yes I would be interested in the comparison between Free CDN and MAX CDN. Thanks
Erwin says
Thanks for interesting post.
If I understand it correctly CDN is useful for websites with international orientation, but not for websites with a national user base. I am located in the Netherlands (small country), and my website is focusing on people in the Netherlands. Am I correct that CDN is not going to improve loading speed for my customers?
Valerie says
If a CDN is serving static content, why would one *also* need server-side and client-side caching?
Syams says
Please, advice me about free CDN Cloudflare. It is useful enough? or better not install it?
Kawsar says
If you expect to get 2/3 k user maximum per day you never need CDN. It do not improve any performance . just choose a good hosting and fast theme.
Swati says
Thank’s for this article .it was easy to understand. I just wanna know how much does it cost .the basic price. I am from India.
Venkatweetz says
How to implement CDN for the website which have SSL certificate?
Weedney Desmornes says
I have a MacBook Air and I do not want to overload it with files and downloads because the MacBook Air is not designed for that. Is there any way I can begin a website without overloading my computer?
Rb says
Yes there is, start at least with a proper webhoster, not your laptop and slow internet upload…
Ishaan Mehta says
hey..i wanna use cloudflare..
but they require to changes nameservers..will it cause any problems to d original hosting if i point domain nameserver details to cloudflare, n not to hostgator? or it will just work out automatically..? i m using wordpress 4.4.2 btw..plz reply..i need ur help!
WPBeginner Support says
If added correctly, these DNS changes should not affect your hosting at all.
Administrador
Krishnandu Sarkar says
Can I increase Default Cache Time to 12 month in MaxCDN? As the images, css, js that I have will never change. Yes I may add more images as I add more posts. But existing ones will be same as usual forever.
TiffanyBaumgartn says
thank you for useful recommendations and basically very good info
shailaja says
I registered cloudflare cdn to my . but all static files are not hosting by cloudflare. why any cloudflare settings is require.
Fatt Kay says
The CDN is too expensive though…
Fritz says
Fatt Kay, CloudFlare is free.
To WPBeginner: “Why You Need a CDN for your WordPress Blog” is not a question and should not have a question mark. “What the heck is a CDN” is a question and should have a question mark. Nit-picky? Maybe, but mistakes like this are jarring to some of us, and detract from the value of your content.
Brandon says
No it’s not. MaxCDN starts at $9 / per month.
Germain says
so i think i going to singup with justhost.com and i saw that them had a global cdn my question is if anyone know if that service its automatically activated or not?
Natasha says
Learn something new everyday. My head hurts but I’ll keep pressing forward.
Alex Mega says
How much total bandwidth would you recommend to purchase? Where could I find out how much bandwidth we go through on a regular basis. I mean traffic wise I’m sure it depends on location of users. So as a company that may see 100,000 page views/50k visitors or more a month is 100GB of bandwidth enough?
Lazy Sapper says
I have been using Cloudflare for CDN. But unfortunately, I don’t see decline in the consumption of CPU resources.
Syed Balkhi says
Just updated the article.
To answer your question: No CDN does not replace a hosting account. It works with your hosting provider to balance the load and speed things up. You still need a web hosting provider.
Andy Morris says
Still didn’t answer the most basic question. Will I still need a Host Account if I get a MaxCDN account or is it a type of hosting account?
Naval says
What do you think about this cdn speed test tool at spooster.com? Should I follow their recommendation if I choose to go for a free solution?
WPBeginner Support says
We have not tried it so we can’t say.
Administrador
Mark says
I would recommend going with high quality hosting with your own static IP address and reliable hosting/page refresh rates before using CDN.
It’s my understanding that Google ranks sites based on their geographic targeting. Google seems to be focused on providing the best rankings for the smaller businesses in their local markets. This also improves Google’s advertising revenue by having many more sites competing for the same category advertising keywords.
Larger companies are able to have multiple websites in multiple geographical locations and can more easily globally dominate ranking categories.
It’s not clear to me that CDN provides a valuable multiple geographical location presence?
Please comment on how CDN would improve say… your UK search engine ranking (UK visitor traffic) for example if your geographic target was the US?
Thanks.
William V. says
Great overview on what a CDN is and how it works.
I just wanted to add one note… CDNs don’t only accelerate the delivery of static content, but also dynamic content (any content generated in real time by the origin server— e.g. applications) as well. Dynamic content is not cachable, but CDNs can speed up the request and returns from the server through a series of proxy servers/nodes strategically placed around the world… basically creating a more direct route for the data packets to travel through. Traditional internet protocols require that data packets travel through more connecting points, which delays the arrival of data packets… making it slower to load on the client.
Cheers,
Tanveer says
interesting. could you share some link that talks more about this?
Ryan Williams says
Not sure this is right. I’ve conducted tests with every major CDN out there, and in all cases it’s significantly slower accessing uncacheable dynamic pages rather than just going to the origin server directly.
However, it is true that dynamic pages can too benefit from a CDN. The key is to use a CDN that allows almost instant purging, so you have it cache everything and then your application can send a ‘purge’ request to the CDN when it knows an update has occurred (e.g. new post or comment). Of course, this requires specific integration.
Sander says
Actually, if the majority of the page is loaded via CDN content, and the dynamic part of the page is loaded via AJAX, a CDN could considerably increase the speed of a true dynamic page. Obviously, after the page is loaded, a CDN would not help increase the speed of the next AJAX load. But to an uninformed user, the feel of the website would be generally quicker with a CDN than without a CDN.
Pritush says
Now wordpress offers free CDN with Jetpack plugin.. how efficient is that compared to paid CDN like maxcdn ?
WPBeginner Support says
We will probably do a comparison in some article. However, we would still recommend MaxCDN. Installing jetpack in self-hosted WordPress requires you to connect your WordPress site to WordPress.com and many users don’t want to do that. Also Photon just serves images it calls itself image acceleration and editing service, not a CDN.
Administrador
Hemant Aggarwal says
Your website was down because of HostGator’s server issue. Does any CDN provides caching of web pages too?
Editorial Staff says
Cloudflare seems to offer something along that line, but we haven’t tried it.
Administrador
Alan says
Hi, can you tell me if the servers all over the globe have static pages and you update a static page, how long does it take for the servers to update that page? Can you force and update of static pages, and how do you do that? Thanks
Forever Long says
Hello,
I can see this blog entry is a few months old now, however I have just completed building a site on Wix and its sole purpose is e-commerce hopefully on a global scale. Problem is however we have noticed for a while that the website was sluggish during building and still is after going premium and adding more bandwidth. Can MaxCDN solve our problems? Wix only ever gives out canned responses such as “you must compress images” and “please disable the auto rotate function from your slideshow” this is aggravating to say the least. this is the website in question
would be really grateful for your thoughts and assistance i’ve spoke to MaxCDN and they said they can help, however you never know whether its a sales pitch?
Editorial Staff says
Yes they can help.
Administrador
Jen Street says
I have created a few sites using Wix, including my own portfolio site. I offer it to clients who want a very simple site with few updates that is cheap. I plan on moving my own site to WordPress. After learning to create in WP, although with each theme it’s like having to relearn how that specific theme operates, I highly recommend WordPress and find it to be my preferred platform to develop websites from.
David says
Just wondering, can your use two CDNs at once, like MAXCDN and Cloudflare?, what are the consequences? is it feasible?
Editorial Staff says
It is possible. However cloudflare requires you to change your DNS to them which is something you may or may not want.
Administrador
Raulnayak says
I am with MaxCDN too and I am loving it..Thanks for this wonderful post!!
TechZoomOrg says
Hi. I am using CloudFlare & WP Total Cache. Now, can we still get maxCDN working for the same site? Will it make a significant difference?
What would you differentiate & suggest for people using CloudFlare for their WP sites.
Eager to explore more. Thanks
wpbeginner says
@TechZoomOrg If you are using CloudFlare then you don’t really need MaxCDN. From our understanding it is an either / or solution.
Raulnayak says
@wpbeginner Actually,Cloudflare doesnt affect the website as much as MaxCDN, I would recommend that you use both MaxCDN as well as cloudflare and it will be very fast!!
PR_Luv says
So in relation to this, how is a VPS used and applicable?
Great post!
@PR_Luv
wpbeginner says
@kath.gamboa First of all the idea is that CDN service will not go down because they have so many datacenters across the globe. But lets imagine the worst and say that if it does go down, then all you have to do is go into your W3 Total Cache plugin, and turn off CDN for that time. All of your content will then be served directly from your server.
Remember, you never upload any content directly to the CDN servers. You always upload it to your web hosting server, and CDN simply mirrors it.
kath.gamboa says
What happens when the CDN service goes down? Does that mean that the website’s static content will be inaccessible as well? If yes, are there ways to revive the website when the CDN service goes down?
PeterApalais says
Okay how does it work. I am with hostgaor. I want faster page loads etc. I personally live in Australia. So there is is delay because of that huge big distance the information has to travel. Okay for someone who lives next to the server in the USA, but not ideal for here in OZ.
1. Does MaxCDN have a server here in Australia?
2. What about Amazon S3, do they have a server in Australia?
3. Does anyone?
4. Does the CDN have copies off everything that is on my website. So like the HTML files as well? If so, maybe a work around for me would be to get a web host based here in Australia. This will allow fast loading here, then use the CDN for the rest of the world.
5. So I guess, if I am browsing from the England, will it pull everything from the England server, and nothing from the hostgator server back in the US??
Peter
Raulnayak says
@PeterApalais I think yes,its der In sydney or its being planned.. See here, http://www.maxcdn.com/features/network/ .. I would recommend MaxCDN because they charge on pay-as-you go basis i.e as $ 40 per 1TB of data… Amazon is costly. It mirrors the whole website and creates cache or the websites so in the event that the server is down,the website doesnt go offline.. I personally use it for my http://www.allcancook.com
AstroGremlin says
Thanks for the reply! CDN may well be in my future. @wpbeginner
wpbeginner says
@AstroGremlin Doesn’t matter how big the site is, CDNs will help regardless. But if the small site is your personal site, then it is probably not worth you having the CDN.
Raulnayak says
@wpbeginner Actually,the best part of MaxCDN is that it doent matter how big or small your website is, It has a wonderful pay-as-you go plan where you have to renew only when you are done using the 1 TB you bought.. So if the 1 Tb doesnt get used up even after 2 years, its fine,the plan will go on…
AstroGremlin says
I notice that the rate one pays depends on volume (which seems very fair). But how can I tell how many gigs my blog is serving up? Also, does CDN makes sense for a really low traffic site?
On caching: I tried W3 but it was causing conflicts. I switched to Supercache and haven’t looked back.
archon810 says
WP-SuperCache works great with MaxCDN, that’s what I use.
Peter says
Hi,
I have a question, is there any alternative plugin to use with WordPress and MaxCDN other than w3totalcache ?
w3totalcache is causing some memory problems on my VPS server ?
Jason H says
WP-Super Cache is a bit simpler to use that W3 Total Cache and has a tab to configure Origin-Pull CDNs. Otherwise, you can use another plugin in conjunction for Push CDNs but I would recommend Origin-Pull be a requirement of the CDN you go with.
Bob says
I on a bluehost shared server and was thinking about paying extra for a static ip address – would a static ip address increase my website speed?
But now reading this I wonder if I should bypass the static ip address and just go for a CDN solution instead?
I have done all the minifying, caching, etc, so did assume the next step was a static ip address. But perhaps it is really a cdn solution that I need?
Editorial Staff says
Go with the CDN solution.
Administrador
Raulnayak says
A VPS or a cloud server is always safer and faster than a shared server..
Andrea Barghigiani says
Hi there!
I am using CloudFlare (https://www.cloudflare.com/) a CDN service that says will help me up speeding my website only by changing my DNS.
Do you have any advice on how to set up W3 Total Cache to work with the CloudFlare? What do you think about it?
Thanks for the answers!
Editorial Staff says
No advice. Cloudflare should have a tutorial for integration.
Administrador
Raulnayak says
Cloudflare automatically integrates itself as a cdn..You dont need to setup W3 Total Cache to work with cloudflare..
Peter says
@Editorial Staff | Well i setup this using: https://www.wpbeginner.com/plugins/how-to-install-and-setup-w3-total-cache-for-beginners/
I don’t want to change w3totalcache becasue the implementation of CDN was very simple and it has many goodies inside. One plugin to rule them all. Before that i use WP Super Cache.
I am still confused what happaned to my VPS but like i wrote my ideas are over.
Raulnayak says
@Editorial Actually WP super cache is better and setting it up is almost the same as W3 total cache..
Rajesh says
I am using sub-domain as cdn. like cdn.namase.com and I am using W3 total cache.
Peter says
Hi,
Could please provide some more info about those two cases:
Improved User Experience – Since we started using a CDN, we have noticed a decline in bounce rate on our site. Furthermore, we have also seen increased in pageviews and numbers of pages viewed by each user. So clearly a fast site means improved user experience.
Improvement in SEO – Google has clearly stated that faster sites tend to rank higher in Search Engines. We have noticed our site ranking higher once we did the optimization on our site.
Something more, like how your counce rate and pageviews changed ?
SEO in Google, how fast can you see something changes, by traffic monitoring or how come ?
Tnx , I am happy CDN user from yesterday with your coupon as well.
Editorial Staff says
When we optimized our site for speed, the site went about 240% faster. We saw a huge decline in bounce rate as people were not just exiting on the first page. They were going to other pages as well which means increase in pageviews. Clearly the user experience must have been improved by the faster site. Because we did not change the placement of related links or anything. Those were there before and after.
In terms of google, it has been stated that the faster your site is, the more pages will get indexed per day.
Administrador
Peter says
Tnx for fast response to my comment.
After implemnting CDN to my sites the onlu problem that i have is i cannot test how much faster it goes now.
Pingdom is not working now, YSlow in Firefox also stops to work.
How you test your site if i may know.
Tnx
Peter says
Hi,
Ok, listen to my horror story.
After implemnting some CDN to my couple of WordPress websites, what i mean implement, delete old cache systems on those sites and installed W3 Total Cache plugins.
I setup evrything as it should be and go to sleep.
Now from this morning i have big problems with my VPS server.
Don’t know what is going on but my CPU is from time to time (short period of time) goes like 100% , memory is bigger & bigger, swap is starting to work… tasks are going from normal about 60 to 100 or even more.
Anyway i am fighting with this one almost 10 hours without sucess. I reboot server, soft&hard and make many stuff but nothing seems to work.
In past server was not doing nothing almost , now it is extreme busy.
I think this is too much for me and i need to find WordPress+Linux pro who will help me with that problem.
Cheers
Editorial Staff says
Are you setting the right settings with W3 Total Cache??
Gigi says
Delete w3totalcache and try w-supercache, i have deleted w3 and with wpsupercache my site is loading more fast.
Rich Kent says
Hmm. Still haven’t received an activation email. I did receive an email asking how I like the service – replied to that saying I’m still not setup, and haven’t heard anything back. I’m starting to think I made a mistake signing up with MaxCDN. I’ve sent 2 more emails, and tried to text chat, but that timed out and I got a ‘send an email’ message.
Rich says
Just FYI – Got in touch on Monday and worked it out. I’m very happy with my sites performance now that I have it working. MaxCDN = good!
I should note that I’m not using this on my site (under my signature) – at least not yet – so don’t let that be the judge of speed. I’m using the CDN on other sites that actually get high volume.
They could use a bit of work on CS, but maybe just caught them at a bad time. The network itself appears to be good enough that it’s worth it either way.
Tim says
This is not something are new blogger would need to worry about for a while though right. Even if someone does load it in England, if there is not much content does it matter?
Thanks,
TJ
Editorial Staff says
No matter how big your site is, CDN will almost always speed up the site. However, keeping server load down is not something that new sites have to worry about, so in that aspect (You don’t need it). But in other aspects, CDN will help you. We never launch any site without utilizing CDN from Day 1.
Administrador