The MoaT-Link Server
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MoaT-Link requires a data server for message history, retrieval of non-retained or possibly-non-existent messages, and communication between clients.
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Rationale
Message history
MQTT remembers zero or one message per topic. Sometimes it's important to recover old messages. The MoaT-Link server can record them.
Message retrieval
MQTT is very good at giving you a topic's message as fast as possible, but the only way to discover that a messages doesn't exist is to send another message on a different topic. (Actually, this may not even work on a multi-threaded server.)
That is not always a good idea. Thus you can just ask the server for it.
Inter-Client communication
Every program that uses MoaT-Link should connect to a server and broadcast its location and services. Thus any other MoaT-Link user can connect
Data recovery
If your MQTT cluster crashes, restoring the status from a day-old backup may not be the best strategy. The MoaT-Link server will reload the current state from its log and restore the server's state to just before the crash.
Passive Servers
Normally the MoaT-Link servers cooperate closely and continuously discuss
who of them is responsible for whatever needs doing. To keep a particular
server out of this discussion yet still have it exchange data with its
peers, start it with the -L (“local”) option; equivalently, set
“local_only” in the “server” section of the configuration.
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1 maintainer
Metadata
1 maintainer
Release files for moat-link-server 0.8.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
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| moat_link_server-0.8.0.tar.gz | 36.3 kB | Without provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| moat_link_server-0.8.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 66.3 kB
Release files / moat_link_server-0.8.0.tar.gz
| Download URL | moat_link_server-0.8.0.tar.gz |
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| Size | 36.3 kB |
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| Size | 30.0 kB |
| Tags | Python 3 |
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