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docs/FAQ.md: actualize answer about deduplication

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Aliaksandr Valialkin 2020-03-09 13:37:12 +02:00
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@ -163,14 +163,7 @@ or via [Prometheus datasource in Grafana](http://docs.grafana.org/features/datas
### Does VictoriaMetrics deduplicate data from Prometheus instances scraping the same targets (aka `HA pairs`)? ### Does VictoriaMetrics deduplicate data from Prometheus instances scraping the same targets (aka `HA pairs`)?
Data from all the Prometheus instances is saved in VictoriaMetrics without deduplication. Yes. See [these docs](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/README.md#deduplication) for details.
The deduplication for Prometheus HA pair may be easily implemented on top of VictoriaMetrics with the following steps:
1) Run multiple VictoriaMetrics instances in multiple availability zones (datacenters).
2) Configure each Prometheus from each HA pair to write data to VictoriaMetrics in distinct availability zone.
3) Put [Promxy](https://github.com/jacksontj/promxy) in front of all the VictoriaMetrics instances.
4) Send queries to Promxy - it will deduplicate data from VictoriaMetrics instances behind it.
### Where is the source code of VictoriaMetrics? ### Where is the source code of VictoriaMetrics?