10425eb925
See: https://emqx.atlassian.net/wiki/spaces/P/pages/612368639/open+e5.1+remove+auto+restart+interval+from+buffer+worker+resource+options Current problem: In 5.0.x, we have two timer options that control the state changing of buffer worker resources: auto_restart_interval and health_check_interval. - auto_restart_interval controls how often the resource attempts to transition from disconnected to connected. - health_check_interval controls how often the resource is checked and potentially moved from connected to disconnected or connecting. The existence of two independent timers for very similar purposes is confusing to users, QA and even developers. Also, an intimately related configuration is request_timeout, which can interact badly with auto_restart_interval if the latter is poorly configured: requests may always expire if request_timeout < auto_restart_interval and if the resource enters the disconnected state. For health_check_interval, we attempt to derive a sane default that gives requests a chance to retry (if request timeout is finite, then the resource retries requests with a period of min(health_check_interval, request_timeout / 3). Another problem with the separate auto_restart_interval is that its default value (60 s) is too high when compared to the default request timeout and health check, leading to the problems described above if not tuned. Proposed solution: We propose to drop auto_restart_interval in favor of health_check_interval, which will be used for both disconnected -> connected and connected -> {disconnected, connecting} transition checks. With that, the resource will attempt to reconnect at the same interval as the health check, which currently is 15 s. Also, as two smaller changes to accompany this one: - Increase the default request_timeout from 15 s to 45 s. - Rename request_timeout to request_ttl. |
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EMQX OpenTSDB Bridge
OpenTSDB is a distributed, scalable Time Series Database (TSDB) written on top of HBase.
OpenTSDB was written to address a common need: store, index and serve metrics collected from computer systems (network gear, operating systems, applications) at a large scale, and make this data easily accessible and graphable.
OpenTSDB allows you to collect thousands of metrics from tens of thousands of hosts and applications, at a high rate (every few seconds).
OpenTSDB will never delete or downsample data and can easily store hundreds of billions of data points.
The application is used to connect EMQX and OpenTSDB. User can create a rule and easily ingest IoT data into OpenTSDB by leveraging the EMQX Rules.
Documentation
- Refer to EMQX Rules for the EMQX rules engine introduction.
HTTP APIs
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Several APIs are provided for bridge management, which includes create bridge, update bridge, get bridge, stop or restart bridge and list bridges etc.
Refer to API Docs - Bridges for more detailed information.
Contributing
Please see our contributing.md.
License
EMQ Business Source License 1.1, refer to LICENSE.