* Update 106-data-replication.md
I added a short description and video link that explains data replication within four minutes. Please take a look at it, thanks :)
* Update content/roadmaps/101-backend/content/108-more-about-databases/106-data-replication.md
Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
* adding description to the type checkers
* Update content/roadmaps/100-frontend/content/116-type-checkers/readme.md
Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
* Added a New resource to Fetch API
RapidAPI gives an in-depth explanation of fetch API. what it is, How to use it to process API responses, HTTP Methods with Fetch API and How can errors be handled. Suited For Beginners and the content is packed with real-time examples.
* Update content/roadmaps/100-frontend/content/103-javascript/102-learn-fetch-api-ajax-xhr.md
Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
* Update gRPC deffinition
I thought that some high-level definition of this would be nice.
* Update content/roadmaps/101-backend/content/109-apis/103-grpc.md
Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
#### What roadmap does this PR target?
- [ ] Code Change
- [x] Frontend Roadmap
- [ ] Backend Roadmap
- [ ] DevOps Roadmap
- [ ] All Roadmaps
- [ ] Guides
#### Please acknowledge the items listed below
- [x] I have discussed this contribution and got a go-ahead in an issue before opening this pull request.
- [x] This is not a duplicate issue. I have searched and there is no existing issue for this.
- [x] I understand that these roadmaps are highly opinionated. The purpose is to not to include everything out there in these roadmaps but to have everything that is most relevant today comparing to the other options listed.
- [x] I have read the [contribution docs](../contributing) before opening this PR.
#### Enter the details about the contribution
I am suggesting the addition of PWA tutorials from MDN Web Docs. Apart from basic introduction to PWAs, it has numerous helpful How-to's such as using client-side storage with IndexedDB and Web Storage API, making mobile-first and installable PWAs, enabling "add to home screen", using notifications and push API etc.