Prometheus Data Persistence Explained

Prometheus has two main options for data persistence: local persistence and remote persistence.

1. Local persistence: Prometheus defaults to using local disk for data persistence, storing time series data in blocks on the local disk. This method is simple and efficient, ensuring data security and reliability. However, due to limited local disk capacity, there may be situations where there is insufficient data storage.
2. Remote persistence: Prometheus also supports remote persistence solutions, enabling data to be sent to remote storage systems. This method can address the issue of local disk capacity limitations, while also facilitating data backup and disaster recovery. However, it may result in increased network latency and data transfer costs.

Users can choose a suitable persistence solution based on their own needs, or combine two options for data retention. Prometheus also offers various storage adapters such as Prometheus TSDB, VictoriaMetrics, etc., allowing users to select the appropriate adapter based on their requirements.