[PHP] gRPC channel connection with php-fpm

[jis...@wepay.com]

Hello,

We want to start using PHP gRPC clients but have a question regarding php-fpm and the grpc channel connections.

When we send a request with PHP, php-fpm maintains a pool of workers to deal with the request. When using gRPC channels, does the php process bring up and down the gRPC channel with the worker lifecycle?

When create a channel, I see that you can create it with the following option: grpc_target_persist_bound. Will php-fpm create and destroy a channel on every request, or will the php channel be shared when sending the same target is specified?

Has anyone seen this issue, or had similar encounters when using PHP gRPC with php-fpm? Thanks for any help.

[Stanley Cheung]

On Tue, Jan 15, 2019 at 11:35 AM jisooh via grpc.io <grp...@googlegroups.com> wrote:

Hello,

We want to start using PHP gRPC clients but have a question regarding php-fpm and the grpc channel connections.

When we send a request with PHP, php-fpm maintains a pool of workers to deal with the request. When using gRPC channels, does the php process bring up and down the gRPC channel with the worker lifecycle?

Within a lifetime of a php-fpm worker, the grpc channel is reused. 

 

When create a channel, I see that you can create it with the following option: grpc_target_persist_bound. Will php-fpm create and destroy a channel on every request, or will the php channel be shared when sending the same target is specified?

The underlying grpc channel will be re-used.

 

Has anyone seen this issue, or had similar encounters when using PHP gRPC with php-fpm? Thanks for any help.

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[jis...@wepay.com]

Thanks for the reply Stanley. This information is helpful to us.

[Drake Gens]

Is there anyway to kill off persistent GRPC channels. We are seeing issues with so many connections being open.