Canary Sender Buffer Capabilities
Hello everyone,
My team and I have some questions related to the capabilities of the Sender Buffer.
- Is there a limit in the amount of data Canary can buffer?
- What would happen if we reached that limit? If the limit is tied to the amount of memory space available in the machine where Canary is running, what would happen if the machine ran out of space? Does the buffer behave as a circular buffer overwriting oldest data?
- Where is the buffered data stored?
- If electrical power is interrupted while buffering data, is that data lost?
Thank you in advance.
3 replies
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Good morning Jesus, thank you for joining the community!
Canary’s store and forward provides for local buffering, to disk, of data should the historian server be offline or the network connecting the data collector and the historian is interrupted.
Q: Is there a limit in the amount of data Canary can buffer?
A: Canary will buffer the data to local disk. Data will continue to buffer until no more than 1024 MB of disk space remains. 1024 MB is the default but this can be adjusted to be lower or higher as necessary.
Q: What happens if the limit is reached?
A: Once the disk space limit has been reached, no new records will buffer but the previous buffered records will be preserved.
Q: Where is the data buffered?
A: Configurable to the drive of your choice. Default is stored in the C:\ProgramData\Canary Labs\Sender\Buffer\ directory.
Q: If electrical power is interrupted while buffering data, is that data lost?
A: Since data is written to disk, rather than stored in memory, the data will persist, even if power is lost to the machine.
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Hi jesus . Here is some more information if you would like to change those limits. https://helpcenter.canarylabs.com/t/83hj322/configuring-disk-space-limit-for-senderhistorian-version-21
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Steve Mason
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