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Date: Sat, 28 Oct 2023 15:25:04 -0700
Message-ID: <CAMrTa2EPNhkFPpnuKtCksHfCM_On-AsP_X966M2VZ-aSxEkkOQ@mail.gmail.com>
To: juan carlos morales <dev.juan.morales@gmail.com>
Cc: Kirill Nesmeyanov <nesk@xakep.ru>, internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Discussion - PHP with distributed programming features.
From: jordan.ledoux@gmail.com (Jordan LeDoux)

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On Sat, Oct 28, 2023 at 10:54=E2=80=AFAM juan carlos morales <
dev.juan.morales@gmail.com> wrote:

>
>
> What I mean is more about =E2=80=A6 migrating a running php instance to a=
nother
> node or another php instance, in fact your php code is running, suddenly =
we
> Need to move to another node, how to do it?
>

This seems less like a discussion about a PHP feature and more like you
asking internals for tech support at work, honestly. As far as I know,
there isn't a way to do what you're asking, because you can accomplish the
same thing much easier by designing your application better to make API
calls to services, which is what people have already suggested. The PHP way
to handle the root cause of your problem (too many resources being used on
a single machine) is to divide the application into services and use APIs,
often through sockets, the delegate work to those services.

There are also other ways of handling this common problem in web
application architecture. You can break up the request into multiple
requests on the client side so that the user sees progress happen in
chunks. You can use tools like RabbitMQ or other queuing services to
perform certain long-running tasks asynchronously. You can use more
powerful hardware or provision more capable nodes.

In fact, several of these actually fall under the Actor/Object or Dataflow
model of implementing Distributed Programming. What PHP does not support is
the Distributed Shared Memory model of implementing Distributed Programming
(which is what you are asking about apparently) because doing so would
almost certainly make PHP worse at the things it is well suited for, would
massively complicate the work of maintaining and developing the language
for the contributors to the language, and would be a massive undertaking to
implement in the first place.

PHP has distributed programming features. In fact, all of the suggestions
you have received so far ARE ways of doing distributed programming
features. But internals is not your, or my, or anyone else's personal tech
support channel, and personally it feels like you haven't explained what it
is you want to discuss with internals about improving or changing PHP's
support for distributed programming. Are you interested in working on an
RFC to clone a PHP process onto a remote box? I can't imagine that would
get much support here, or be something that is very simple to do.

Jordan

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