HTTP connection has two branches. There are: Persistence HTTP (HTTP 1.1) In persistence HTTP, there are two-part. such as with tunnelling and without tunnelling. By default HTTP 1.1 is tunnelling. Non-Persistence HTTP (HTTP 1.0) Open the connection you send the message, get the responses and close the connection. …

TCP hearer format: There are a few flags here. Synchronization (SYN) Acknowledgement (ACK) Finish (FIN) Reset (RST) Push (PSH) Urgent (URG) For example: In the first request, the client sends the SYN flag. Then the server sees that first client message and the server responds to that message with acknowledgement…

floating point numbers are numbers that contain floating decimal points. For Example: 6.9 and 12.3 are floating point numbers. To represent floating point numbers in a computer “IEEE 754” standard is used. There are three types of floating-point representations. 1. Single Precision 2. Double Precision 3. Long Double Precision Let’s…

Why do we need a messaging system? Most of the time we implement microservices based on REST. When we implement a solution based on REST, it will be asynchronous architecture. The protocol we use to do the Microservices most of the time is HTTP. HTTP is synchronous. But we implement…

what is Reactive Programming? A new programming paradigm that allows us to manipulate the stream of data using function. In order to make reactive programming in reality. Most programming languages don’t support reactive programming. Data as stream Functional Programming Asynchronous Observers. What can do with reactive programming? can be used…

Design Patterns… Mainly we discussed three patterns. There are Aggregator Pattern Circuit Breaker Pattern Proxy Pattern Aggregator Pattern There are three ways to implement an aggregator pattern. Chain Pattern You can call one service, get a response and call other services. Then aggregate and send the response to the client. …

Design Design should be Domain-Driven Development. We need fresh DDD. The scope of the service should be independent of it. Hard-coded values. You shouldn’t hard-code foreign service addresses rather you should use services discovery tools for the particular job. Example of services discovery tool: Proxy Loggings. Logs are very important…

Monolithic Application. Monolithic Application has a single executable file for the entire application. In other words, the entire application is packed into one single file. For example: Just think about one of your academic project.( 1 year or 2 year project) The advantage of Monolithic Application: Simple to develop. Simple…