When it comes to the communication layer between microservices, synchronous is certainly the most widely used approach. Within this topic, some protocols are well known and others less so. The range of direct protocols is as follows:
- HTTP
- TCP
- WebSockets
- Sockets
- RPC
- SOAP
Arguably, the most commonly implemented is HTTP. Many microservices use HTTP to communicate with each other, where as the HTTP is typically used with JSON.
The problem with this approach is that, with HTTP, JSON can generate an unwanted processing time to send and translate the information. Some teams that use JSON with HTTP only adopt the keep alive strategy for app-to-app communication and conventional connections to APIs.
When it comes to HTTP, API with JSON ...
