Re: How (or should) I delete pubsub channels

[Marc Gravell]

Either unsubscribe, or just close the connections that subscribed. Messages are not held on subscription channels - they are delivered to any connections that are interested then they are discarded. It is not a persistent queue etc.

Marc

On 16 May 2013 15:28, "Destan Sarpkaya" <des...@dorukdestan.com> wrote:

I have already posted on SO: http://stackoverflow.com/q/16585161/878361 and want to share here, too.

In my app I dynamically create new pubsub channels and there might be too many like 5k per day. According to my app's requirements any channel is used for at most 5minutes. (and subscribed clients may be closed without unsubscribing)

Considering this situation, thousands of unused channels will be present in the app in a week. So how can I delete unused channels or should I even delete them. What happens to the channel and messages published via them, do they stay on the memory?

thanks

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[Jay A. Kreibich]

On Thu, May 16, 2013 at 07:05:15AM -0700, Destan Sarpkaya scratched on the wall:

> I have already posted on SO: http://stackoverflow.com/q/16585161/878361 and
> want to share here, too.
>
> In my app I dynamically create new pubsub channels and there might be too
> many like 5k per day. According to my app's requirements any channel is
> used for at most 5minutes. (and subscribed clients may be closed without
> unsubscribing)
>
> Considering this situation, thousands of unused channels will be present in
> the app in a week. So how can I delete unused channels or should I even
> delete them. What happens to the channel and messages published via them,
> do they stay on the memory?

Messages never stay in memory. They are delivered and that's it. If
you're not connected, you don't get the message.

Channels are a lot like sets. If you have subscribers on a channel,
it exists. When the last subscriber leaves a channel, much like
removing the last element of a set, the channel no longer exists.

-j

--
Jay A. Kreibich < J A Y @ K R E I B I.C H >

"Intelligence is like underwear: it is important that you have it,
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