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gRPC

gRPC Health Checking Service

The gRPC Health Checking Protocol defines a standard service that gRPC servers implement to expose health status information to clients and load balancers. Servers implement the Health service proto to report per-service readiness, and clients can configure automatic health-check-based connection management.

Documentation Provider Profile APIs.io AsyncAPI GitHub

gRPC Health Checking Service is one of 7 APIs that gRPC publishes on the APIs.io network, described by an AsyncAPI event-driven specification.

Tagged areas include Health Checking, Load Balancing, and Observability. The published artifact set on APIs.io includes API documentation, an API reference, a GitHub repository, and an AsyncAPI specification.

This event API exposes 6 operations across 3 channels, and defines 8 schemas. It is described by AsyncAPI 2.6.0, at version 1.0.0.

The API connects through 2 servers: {host}:{port} (grpc), {proxyHost}:{proxyPort} (https).

6 operations 3 channels 8 schemas

Metadata

The identity and technical contract details declared by the specification.

Specification
AsyncAPI 2.6.0
API Version
1.0.0
Servers
{host}:{port} (grpc)
{proxyHost}:{proxyPort} (https)
Contact
gRPC Authors
License
Apache 2.0
Resource Areas
1

Channels & Operations 6

Across 3 channels, the API surfaces 6 operations. Each is listed below with its action, channel, parameters, and response codes.

Channels 6
SUB
/grpc.health.v1.Health/Watch
Stream health status changes for a service
watchHealthStatus body
PUB
/grpc.health.v1.Health/Watch
Send a health watch request
sendHealthWatchRequest body
SUB
/grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo
Receive a server reflection response
receiveReflectionResponse body
PUB
/grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo
Send a server reflection request
sendReflectionRequest body
SUB
/grpc.health.v1.Health/Check
Receive a unary health check response
receiveHealthCheckResponse body
PUB
/grpc.health.v1.Health/Check
Send a unary health check request
sendHealthCheckRequest body

Messages & Schemas 8

The contract defines 8 schemas that model the data carried by its messages. The most detailed are ServerReflectionResponse (6 properties), ServerReflectionRequest (6 properties), HealthCheckResponse (1 property), HealthCheckRequest (1 property). Each schema is shown below with its type and property counts.

HealthCheckRequest
message
Request to check or watch the health of a named gRPC service
HealthCheckResponse
message
Health status of a gRPC service
ServerReflectionRequest
message
Request for service or type information from the reflection service
ServerReflectionResponse
message
Response containing service definitions or metadata from the reflection service
HealthCheckRequest
object
Request message for both the Check and Watch RPCs of the gRPC Health Checking Protocol (grpc.health.v1).
1 property
HealthCheckResponse
object
Response message from the gRPC Health Checking Protocol containing the current serving status of the queried service.
1 property 1 required
ServerReflectionRequest
object
Request message for the gRPC Server Reflection service (grpc.reflection.v1alpha.ServerReflection). Exactly one of the query fields must be set.
6 properties
ServerReflectionResponse
object
Response message from the gRPC Server Reflection service. Contains the echoed original request and exactly one response body field.
6 properties

Specification

The full machine-readable AsyncAPI contract behind this narrative.

Source

asyncapi.yml Raw ↑

Other APIs gRPC publishes across the network.

gRPC Core Framework
AE Profile APIs.io
Protocol Buffers Service Definition Schema
AE Profile APIs.io
gRPC Server Reflection
AE Profile APIs.io
gRPC Channelz API
AE Profile APIs.io
gRPC Health Checking API
AE Profile APIs.io
gRPC Reflection API
AE Profile APIs.io
#Health Checking#Load Balancing#Observability
← Back to G APIs
API Details
ID
grpc:grpc-health-checking
Server
{host}:{port} (grpc)
Docs
https://grpc.io/docs/guides/health-checking/
Provider
gRPC
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