CODEWITHSUNDEEP
javagrpcchannelstub
Ozturk
Ozturk

Reputation: 609

When should GRPC ManagedChannel be shutdown?

ManagedChannel managedChannel = ManagedChannelBuilder.forTarget(host).usePlaintext().build();

When I should shutdown the managed channel? Sould it be open all time ? Or Should I close this channel after every operations?

Upvotes: 3

Views: 6915

Answers (2)

Kavindu Dodanduwa
Kavindu Dodanduwa

Reputation: 13077

The shutdown can be used if you see the need to close existing connections(ex: streams) and prevent future connections. A possible scenario is an application exit with a clean state (i.e - finalize all network communications and exit).

However, as Fabian highlighted channels are recommended to be reused where possible. This is further confirmed from the performance best practices guide

Always re-use stubs and channels when possible.

Upvotes: 0

Fabian Braun
Fabian Braun

Reputation: 3950

It's intended to be kept open and reused across your application. See for instance this thread on github, in which one of the contributors states:

Channels are expensive to create, and the general recommendation is to use one per application, shared among the service stubs.

Upvotes: 7

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