Discover Mercure
Mercure is a web protocol allowing to push data updates to web browsers (or other HTTP clients) in a convenient, fast, reliable and battery-efficient way. Mercure is especially useful to publish real-time updates of resources served through web APIs.
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- Available
- Last places
- Full
Duration
2 days
Level
Intermediate
Rate
1600€ HT/person
Prerequisites
- Good knowledge of PHP and POO
- A laptop to bring with you
Program
1 - Protocol presentation
Use case
- Straight availibilty
- Asynchronous uses
- Collaborative building
Differences and similarities between Mercure and existing protocols:
- With Server-Sent Events
- With Websocket
- With Websub
- With Web Push
Presentation of HTTP/2 and its use with Mercure
Presentation of HTTP/3 and its use with Mercure
2 - Hub
- Classical installation
- Installation with Docker
- Installation with Kubernetes
- Automatic HTTP/2 and HTTPS support (using Let's Encrypt)
- Configuration
- Alternative implementation (Hub Node.js)
3 - Client side
- JavaScript: EventSource class
- Regards related to cross-domains cookies
- Configure CORSs
- Polyfill for old browser
4 - Authorization
- Presentation of Mercure authorization mechanism
- Presentation of JWT tokens format
- Targets
- Publication rights
- Subscription rights
- Authorization through cookies
- Authorization through HTTP header
5 - Mercure and APIs
- REST, HATEOAS and hypermedia reminders
- Presentation of auto-discoverable through Web Linking
- Use Mercure for GraphQL subscriptions
6 - Mercure integration with main frameworks and languages
- Example with API Platform and Symfony (PHP, through Hub)
- Example with Node.js (through Hub)
- Use without hub with Go
- Use without hub with Node.js