What is a route resolver?

What is a route resolver?

Route resolver is the way to prefetch data before loading the component. It is a class that implements Resolve interface. This interface define a resolve method that use when navigation start. Here router waits to pre-fetch data from API before loading the target component.

How do you use a route resolver?

This will take three steps:

1. Step 1: Create a resolver class which makes an Http call to pre-fetch the data we need. Create a new Typescript file inside the app folder and name it:
2. Step 2: Add a Resolve Guard to the route.
3. Step 3: Get the resolved data from the component’s activated route.

What is the use of Route resolver in angular?

What is Angular Resolver? Angular Resolver is used for pre-fetching some of the data when the user is navigating from one route to another. It can be defined as a smooth approach for enhancing user experience by loading data before the user navigates to a particular component.

Should angular use resolver?

A Resolver can be added to any Route that you define in your Routing Module, allowing the requests to process during the Router’s navigation lifecycle before your Component is loaded. Some benefits to this approach: When the Component loads, data is preloaded. Component code is more meaningful and less cluttered.

What is lazy loading in angular?

Lazy loading is a technique in Angular that allows you to load JavaScript components asynchronously when a specific route is activated. It improves the speed of the application load time by splitting the application into several bundles. When the user navigates through the app, the bundles are loaded as required.

What is a guard in angular?

Guards are implemented as services that need to be provided so we typically create them as @Injectable classes. Guards return either true if the user can access a route or false if they can’t. Angular will keep the user waiting until the guard returns true or false . Let’s create a simple CanActivate guard.

What is promise in angular?

Promises in AngularJS are provided by the built-in $q service. They provide a way to execute asynchronous functions in series by registering them with a promise object. {info} Promises have made their way into native JavaScript as part of the ES6 specification.

How does a resolver work?

How does a resolver work? A resolver uses the same basic physical principles as an electrical transformer. Resolvers typically use copper windings in its stator and a machined metal rotor. The inductive coupling between the windings varies according to the angular position of the rotor.

How lazy loading works in Angular?

What is the advantage of lazy loading in Angular?

What is the purpose of Route guard?

This route guard is used to keep the user from navigating away from a specific route. This guard can be useful when you want to prevent a user from accidentally navigating away without saving or some other undone tasks.

What can you do with a route resolver?

There is another way to use what is known as a route resolver, which allows you to get data before navigating to the new route. One API that is available for use is the Hacker News API.

How to create a route resolver in angular?

Routing happens right after fetching the data. We are going to design a simple resolver first. We will create a fresh file to create a separate class meant for the resolver. The class we have created has an Angular resolve method, which is capable of implementing the Resolve interface of the router.

How to create a Route 53 resolver endpoint?

On the navigation bar, choose the Region where you want to create a Resolver endpoint. Under Basic configuration, choose the direction that you want to forward DNS queries:

How does Route 53 resolver forward DNS queries to your network?

For more information, see How Route 53 Resolver forwards DNS queries from your VPCs to your network . Like Amazon VPC, Resolver is regional. In each region where you have VPCs, you can choose whether to forward queries from your VPCs to your network (outbound queries), from your network to your VPCs (inbound queries), or both.