Messages

How long are messages stored for?
All paid accounts allow messages to be persisted for 72 hours, and free accounts allow messages to be persisted for 24 hours. See the complete list of accou...
Wed, 11 Oct, 2017 at 11:15 AM
Is it possible to prevent messages published being echoed back to the publishing client?
Our realtime client libraries by default will echo messages published back to the publisher, however they can be configured to disable this feature when i...
Tue, 21 Nov, 2017 at 10:32 AM
What is the maximum message size?
Ably can support very large message payloads, however Ably is designed to be a realtime messaging platform that delivers small payloads incredibly quic...
Wed, 31 Aug, 2016 at 8:52 AM
Reliable message ordering for connected clients
Ably ensures that messages are delivered to persistently connected subscribers on a channel in the order they were published on that channel by any other ...
Wed, 8 Jun, 2016 at 5:45 PM
Are messages recovered if my connection drops?
Yes, all of our client libraries automatically handle connection recovery. When a client connects to Ably, it is assigned a connection ID (a unique pu...
Thu, 10 Dec, 2015 at 8:11 PM
Can I store messages on specific channels?
Yes you can, it's very easily done using our channel rules. Find out more about configuring channel rules Find out more about message stor...
Thu, 10 Dec, 2015 at 8:15 PM
Do you binary encode your messages for greater efficiency?
Yes, all of our client libraries support Message Pack which is an efficient and flexible binary protocol.  Using Message Pack reduces the amount of data tha...
Wed, 20 Jan, 2016 at 2:20 PM
Can a published message be pushed to a mobile device using Mobile Push Notifications (GCM or APN)?
Yes, this functionality is soon to be released allowing you to register iOS and Android mobile devices on channels that will automatically receive notificat...
Tue, 1 Mar, 2016 at 1:04 PM
Can I be notified over HTTP when a channel is created or closed?
Yes, this is supported using WebHooks. You can register for HTTP events to pushed to your servers using WebHooks whenever a channel is created (at lea...
Tue, 1 Mar, 2016 at 1:05 PM
How do I enable history? My messages are not being stored for longer than a few minutes.
History is disabled by default as each message stored and retrieved from history counts as an extra message. As such, customers must explicitly enab...
Sat, 24 Dec, 2016 at 1:11 PM