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31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
# metrics-service
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> A service which produces random streams of data (firehose) of interpretable metric information for various subsystems that can or will be pulled out from a container. These are currently defined in [RFD-0037](https://github.com/joyent/rfd/blob/master/rfd/0037/README.md#default-metric-keys).
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This spike's purpose was to find the best pattern to expose such metrics service with mock data.
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## http1
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+ very simple API to push data from the server to the client
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+ plain HTTP
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- requires a connection to each container - because it's not bidirectional, we can't subscribe to more containers on-demand
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## http2
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+ very simple API to push data from the server to the client
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+ multiplexing
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- push doesn't really help us, because it's only useful for static resources
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## graphql
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+ common interface between all data resources
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+ filter received data
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- api not finalised yet
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- api not documented
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## ws (with [nes](https://github.com/hapijs/nes))
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+ strong integration with [Hapi](https://github.com/hapijs/hapi)
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+ allow to subscribe and unsubscribe on-demand on a single connection
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- some networks might require fallback to pooling
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