RocksDB Storage

RocksDB is a persistent storage engine based on an LSM tree. It is best used in environments with a large number of write requests.

Profile Configuration

Each Apache Ignite storage engine can have several storage profiles. Each profile has the following properties:

Property	Default	Description
engine		The name of the storage engine.
sizeBytes	256 * 1024 * 1024	Sets the space allocated to the storage profile, in bytes.
writeBufferSizeBytes	64 * 1024 * 1024	Size of rocksdb write buffer.

Configuration Example

In Apache Ignite 3, you can create and maintain configuration in either HOCON or JSON. The configuration file has a single root "node," called ignite. All configuration sections are children, grandchildren, etc., of that node. The example below shows how to configure a storage profile with RocksDB storage:

{
  "ignite" : {
    "storage" : {
      "profiles" : [
        {
          "name" : "rocks_profile",
          "engine" : "rocksDb",
          "sizeBytes" : 2560000
        }
      ]
    }
  }
}

You can then use the profile (in this case, rocks_profile) in your distribution zone configuration.