influxdb-ha | High-availability and horizontal scalability for InfluxDB | Load Balancing library
kandi X-RAY | influxdb-ha Summary
kandi X-RAY | influxdb-ha Summary
High-availability and horizontal scalability for InfluxDB
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Top functions reviewed by kandi - BETA
- NewLauncher creates a new Launcher instance
- createQueryNode creates a new QueryNode .
- joinExisting is used to create a new cluster
- CreateLanguage creates a new language .
- getUnaryOp returns the unary operator function .
- fetchLocationMeta fetches the metadata for a location .
- performQuery performs query and returns results .
- streamData streams data for a measurement .
- HandleAuthStatement handles the influxql statement .
- mergeSortResults merges the results into sorted results .
influxdb-ha Key Features
influxdb-ha Examples and Code Snippets
Community Discussions
Trending Discussions on influxdb-ha
QUESTION
I want to send data to an MQTT Broker (Cloud) by querying measurements from InfluxDB.
I have a field in the schema which is called status
. It can either be 1
or 0
. status=0
indicated that series has not been sent to the cloud. If I get an acknowlegdment from the MQTT Broker then I wish to rewrite the query back into the database with status=1
.
As mentioned in FAQs for InfluxDB regarding Duplicate data If the information has the same timestamp as the previous query but with a different field value => then the update field will be shown.
In order to test this I created the following:
...ANSWER
Answered 2018-Sep-14 at 09:21The batch_size
is actually the length of the list of the measurements that needs to passed to write_points
.
Create client and query from measurement (here, we query gps information)
QUESTION
I do lots of research but did not find any good answer.
I wanted to get the current date and time in a nanosecond.
I found that System.nanoTime()
will provide nanoseconds, but that is and system elapsed time. means it will provide a time when system up. I need to use the current date and time in a nanosecond.
I need this for avoiding duplicate of points in InfluxDB, see How does InfluxDB handle duplicate points? So when I use millisecond I am facing issues of data union. So need deciding to go with nanosecond but the problem is while generated nano the second using System.nanoTime()
did not contain current date and time data. and it give me JVM uptime which is useless for me.
ANSWER
Answered 2018-Aug-29 at 15:25You get the best accuracy and precision Java can give you from Instant.now()
. Whether this is enough to solve your problem, I dare not tell. Certainly on a normal computer there is no way to get nanosecond accuracy.
You may need to play some tricks with adding an artificial nanosecond in case Instant.now()
returns the same value twice.
Or simple use the trick mentioned in your link:
Introduce an arbitrary new tag to enforce uniqueness.
For the trick of adding an artificial nanosecond you may for example use something like the following:
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