Query Interface

SQL

Logging

Physical Logging

Ignite uses a write-ahead log which logs logical database modifications and page changes.

Storage Model

N-ary Storage Model (Row/Record)

Storage Architecture

In-Memory

Apache Ignite is a memory-centric distributed database.

Checkpoints

Consistent Fuzzy

According to Ignite's confluence page, consistent checkpointing has been implemented in the system. The fuzzy checkpointing may be implemented in future releases.

Data Model

Key/Value

Ignite uses a key-value store. And Ignite determines the location of the data using a pluggable hashing algorithm. It means every client can determine where the value is stored by plugging the key into a hashing function.

System Architecture

Shared-Nothing

The nodes Ignite nodes can automatically discover each other. This helps to scale the cluster when needed, without having to restart the whole cluster.