What is ssr/ssg/isr? How do I host them on AWS?

summary .

In this article , We are going to discuss how to AWS Up operation SSR/SSG/ISR as well as App Runner The charm of .

Content

• We will first explain the traditional and modern network applications respectively .
• Next , We'll show you how to AWS Hosted on SSR/SSG/ISR.

Traditional network application and modern network application

Traditional network applications

Traditional network applications
=> Application processing is only performed on the server side

for example ,Java Of Spring,Python Of Django,Ruby Of Rails.

Modern network applications

Reactive Web Application

• The application is handled separately on the server side and on the client side .

• Client rendering （CSR）
  => Sigle Page application （SPA） It's a use CSR Created applications .
  -React, Vue, Angular, etc. .

• Server-side rendering （SSR）
  - next ,Nuxt, wait .

• Static site builder （SSG）

• Jamstack Mechanism 、Gatsby、Hugo、Next、Nuxt And others .

• Incremental static regeneration (ISR)
  - The next page (9.4 Features added in version )

CSR（ Client rendering ）/SPA（Sigle Page application ）.

• First, retrieve the empty HTML, And then use JavaScript Generate the entire page .
• According to the data obtained at the client , The entire page is rewritten , No page conversion .

SPA The challenge of

• First, access and load a large number of JavaScript, Then process the entire page , This makes the first load slow .
• The biggest problem is around SEO.

  • If you don't explain JavaScript, Search engine crawlers will interpret empty HTML
  • Modern Google crawlers can also interpret and execute JavaScript
• Build dynamic OGP It's also a challenge
• as for KDDI Engineer portal , It also manages Blog, So it's not just about SEO measures , Also needed OGP measures .

SSR（Server Side Rendering）

• Response request , Returns dynamically generated HTML
• It is also used on the server side JavaScript、 fictitious DOM etc. .
• The disadvantage is that the server side is very heavy ; If you use API Communication etc. , Slow response time .

SSG（Static Site Generator）

• Pre generated HTML Is returned in response to a request
• SSG Generate at build time HTML
• Delivery is very fast , However, the page content cannot be dynamically changed after deployment

ISR（Incremental Static Regeneration）.

• Respond to a request , Return to the statically built page .
• When the expiry date is exceeded ,SSR Regenerate static pages asynchronously .
• While using the cache , Static pages can be updated automatically , If the request is made again after a period of time , The content will be updated , Because the content is built for the next time .

How to be in AWS Hosted on SSR/SSG/ISR

• You only need a server to render （ Set up Nodejs It's OK to use the server ）.

When you want ISR Cache problems at work

• ISR Use cache to regenerate HTML.
  => therefore , As instances and containers expand , The cache time is also different , therefore HTML The response is also displayed differently , This depends on the LB An instance or container that receives access .

Are there any other options ？

Other options include a named Serverless Next.js Component and App Runner Third party tools .

in fact , Trust to Amplify It's OK, too .

• Simple services for static website deployment pipeline and hosting
• It's perfect for SPA or Jamstack trusteeship .
• Amplify => Serverless Next.js Components seem to be based on it .

What is? App Runner？

APP Runner yes " stay AWS Build on 、 The easiest and fastest way to deploy and run a container web application ", That is, an item that allows you to AWS It is very easy and very fast to prepare and run container application services in the environment . let me put it another way , It is a program that allows you to AWS It is very easy and very fast to prepare and run container application services in the environment .

Why choose App Runner？

• Of course , If it is the environment in which the container is running , that ECS That's all right. .
• However , Tell the truth , Even if ECS Fargate It's an option , Isn't it difficult to operate ？ I think it's , Because I think it is .

App Runner

With Fargate, You have to manage containers 、 around VPC、ALB、NLB And automatic extension settings and Codebuild Combine , If you want to automate , but App Runner In a （ Hidden ） All of these are provided in the package .

stay App Runner Deployment in China

• stay App Runner In the deployment method of , There is a feature that can do this automatically .
• In terms of use , If you push the container image to ECR Or push the source code to GitHub,App Runner Will detect it and deploy the container in a good way .