Golang grpc error

1. What is gRPC error?
2. What is err in Golang?
3. Does gRPC use HTTP status codes?
4. Is gRPC restful?
5. What is gRPC protocol?
6. What is Go panic?
7. How do you catch panic in Golang?
8. What is log fatal?
9. Is gRPC faster than rest?
10. What does IO gRPC 7 mean?
11. What is gRPC client?
12. What are the advantages of gRPC?
13. Is gRPC asynchronous?
14. Is gRPC scalable?

What is gRPC error?

Errors are raised by gRPC under various circumstances, from network failures to unauthenticated connections, each of which is associated with a particular status code. The following error status codes are supported in all gRPC languages.

What is err in Golang?

Go code uses error values to indicate an abnormal state. For example, the os. Open function returns a non-nil error value when it fails to open a file. func Open(name string) (file *File, err error)

Does gRPC use HTTP status codes?

GRPC Core: HTTP to gRPC Status Code Mapping. Since intermediaries are a common part of HTTP infrastructure some responses to gRPC requests may be received that do not include the grpc-status header. ... Servers must not use this table to determine an HTTP status code to use; the mappings are neither symmetric nor 1-to-1.

Is gRPC restful?

Compared to REST, gRPC provides greater performance at the expense of less flexibility. ... That is its main advantage over REST: gRPC, in most cases, is way faster and more robust, as it defines a specific set of rules each request and response should adhere to.

What is gRPC protocol?

gRPC is a technology for implementing RPC APIs that uses HTTP 2.0 as its underlying transport protocol. ... These APIs adopt an entity-oriented model, as does HTTP, but are defined and implemented using gRPC, and the resulting APIs can be invoked using standard HTTP technologies.

What is Go panic?

In Go language, panic is just like an exception, it also arises at runtime. Or in other words, panic means an unexpected condition arises in your Go program due to which the execution of your program is terminated. ... The panic function is an inbuilt function which is defined under the builtin package of the Go language.

How do you catch panic in Golang?

We can manage panic without halting process using recover. By calling recover in any function using defer it will return the execution to calling function. Recover returns two values one is boolean and other one is interface to recover.

What is log fatal?

A Fatal Error Log. Describes the fatal error log, its location, and contents. The fatal error log is created when a fatal error occurs. It contains information and the state obtained at the time of the fatal error.

Is gRPC faster than rest?

“gRPC is roughly 7 times faster than REST when receiving data & roughly 10 times faster than REST when sending data for this specific payload. This is mainly due to the tight packing of the Protocol Buffers and the use of HTTP/2 by gRPC.”

What does IO gRPC 7 mean?

The client specified an invalid argument. ... The entity that a client attempted to create (e.g., file or directory) already exists. PERMISSION_DENIED. 7. The caller does not have permission to execute the specified operation.

What is gRPC client?

gRPC is a robust open-source RPC (Remote Procedure Call) framework used to build scalable and fast APIs. It allows the client and server applications to communicate transparently and develop connected systems.

What are the advantages of gRPC?

Microservices: gRPC is designed for low latency and high throughput communication. gRPC is great for lightweight microservices where efficiency is critical. Point-to-point real-time communication: gRPC has excellent support for bi-directional streaming. gRPC services can push messages in real-time without polling.

Is gRPC asynchronous?

The gRPC programming API in most languages comes in both synchronous and asynchronous flavors. You can find out more in each language's tutorial and reference documentation (complete reference docs are coming soon).

Is gRPC scalable?

Why gRPC for microservice communication? To solve issues associated with RESTful services, we need a modern inter-process communication system that is scalable and more efficient than RESTful services. Enter gRPC, a modern, open-source RPC framework.