How to Convert Crypto Currencies With GRPC Microservices in Node.js

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The workshop overviews key architecture principles, design patterns, and technologies used to build microservices in the Node.js stack. It covers the theory of the GRPC framework and protocol buffers mechanism, as well as techniques and specifics of building isolated services using the monorepo approach with lerna and yarn workspaces, TypeScript. The workshop includes a live practical assignment to create a currency converter application that follows microservices paradigms. It fits the best developers who want to learn and practice GRPC microservices pattern with the Node.js platform.


Prerequistes:

- Good understanding of JavaScript or TypeScript

- Experience with Node.js and writing Backend applications

- Preinstall Node.js, npm

- Preinstall Protocol Buffer Compiler

- We prefer to use VSCode for a better experience with JavaScript and TypeScript (other IDEs are also ok)

This workshop has been presented at JSNation 2023, check out the latest edition of this JavaScript Conference.

FAQ

gRPC is a modern open source high performance Remote Procedure Call (RPC) framework that runs anywhere. It enables client and server applications to communicate transparently, and makes it easier to build connected systems. gRPC offers multiple benefits including efficient serialization, low latency, support for multiple languages, and scalable distributed systems.

gRPC is more tightly coupled and has a higher performance compared to REST due to its use of HTTP/2, which allows for features like multiplexing and server push. The data in gRPC is serialized using Protocol Buffers, leading to smaller payloads. REST, on the other hand, uses standard HTTP and can be more flexible and easier to use for simple applications.

Protocol Buffers, or Protobufs, are a language-neutral, platform-neutral, extensible mechanism for serializing structured data, similar to JSON or XML. They are used in gRPC for defining the structure of the data being exchanged between client and server. This allows for efficient serialization and strong typing across different programming environments.

In gRPC, a service is defined using a .proto file where you specify the RPC methods, their request and response types using Protocol Buffers. This service definition includes specifying the service name and the RPC operations that can be performed, along with their input and output data structures.

In a microservices architecture, a gRPC server provides the implementation of the services defined in .proto files, handling business logic and data storage. The gRPC client consumes these services, making RPC calls to the server as if they were local function calls. This setup facilitates efficient communication and data exchange between different services in the system.

Yes, gRPC is well-suited for building microservices. It supports efficient communication and seamless data interchange between microservices using Protocol Buffers and HTTP/2. Its performance characteristics and support for multiple programming languages make it a robust choice for microservices architecture.

gRPC's main features include HTTP/2-based transport, Protocol Buffers for serialization, automatic code generation for clients and servers in multiple languages, efficient binary messaging, and support for robust and scalable microservices architectures. It also supports streaming data for real-time communication.

Alex Korzhikov
Alex Korzhikov
Andrew Reddikh
Andrew Reddikh
117 min
16 Jun, 2023

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Video Summary and Transcription
This workshop explores JRPC and how to build JRPC microservices to convert cryptocurrencies in Node.js. It covers the low-level aspects of gRPC and its integration with Node.js, emphasizing its performance benefits over traditional REST APIs. The workshop includes demonstrations of generating protocol buffer types, protocol buffer transformation and serialization, creating server and client with gRPC, and building a cryptocurrency converter using multiple providers. It also discusses the comparison between REST, GraphQL, and gRPC in terms of coupling, verbosity, and discoverability.
Video transcription and chapters available for users with access.

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