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Comment by wolframhempel | Hacker News Reader

I'm afraid I don't know too much about centrifugo, but it looks like a pub-sub server you can connect to Redis. deepstream on the other hand provides datasync (stateful, persistent JSON objects you can subscribe and listen to), request-response and pubsub in a scalable way with granular permissions and authentication strategies and an ecosystem of connectors that make it work with different databases, caches and message buses.

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Thanks, any plan for the android client?

sorry, not quite following. There is an android client here:

https://deepstream.io/install/android/

Ah sorry, didn't notice.

Looks quite interesting, I was evaluating few real-time frameworks (esp socket.io) for the past couple of days . Could you pls shed some lights on how easy to use deepstream to setup a one-to-one in-app chat/messaging setup for android? I guess its the event's are the way to go.

For eg: client.event.subscribe('channel1', eventCallback) client.event.emit('channel1', 'hello how are you?')

How scalable is that? can it support thousands of channels without any hiccups on a single medium digital ocean instance?

It scales very far. We've conducted benchmarks lately that showed that a single deepstream on an AWS t2.medium instance can comfortably handle 160.000~200.000 messages a second and a cluster of six ~ 4 Billion an hour. Please find the detailed results here

https://deepstream.io/info/performance/four-billion-messages...

For your chat though you need to consider whether your messages will be persistent and mutable (changeable after they've been posted) or are just one-off messages. In the first case using a list (https://deepstream.io/tutorials/core/datasync-lists/) with references to records (https://deepstream.io/tutorials/core/datasync-records/) is the way to go, in the second case pub/sub (https://deepstream.io/tutorials/core/pubsub-events/) might be better

Do lists offer pagination for lazy-loading?

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