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Head-to-head · In-Memory Databases

Apache Ignite vs Tarantool DB

  • Updated Oct 2026
  • Both researched from official sources
Higher score Apache Ignite #2 in In-Memory Databases 9.2/10 Open source ✓ 0 of 4 features Visit Apache Ignite
Tarantool DB #6 in In-Memory Databases 8.6/10 Pricing on request ✓ 0 of 4 features Visit Tarantool

Our verdict

  • Highest scoreApache Ignite · 9.2/10

Apache Ignite scores higher on our rubric for in-memory databases: 9.2 against 8.6 out of 10; our editors rank them #2 and #6.

Apache Ignite is the better fit for open-source distributed SQL and in-memory systems. Tarantool DB is the better fit for open-source self-hosted key-value and document systems.

  • Apache Ignite fits best

    Open-source distributed SQL and in-memory systems

  • Tarantool DB fits best

    Open-source self-hosted key-value and document systems

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Apache Ignite 9.2/10 Visit ↗ Tarantool DB 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in In-Memory Databases #6 in In-Memory Databases
Best for Open-source distributed SQL and in-memory systems Open-source self-hosted key-value and document systems
Pricing model Free Paid
Starting price Open source Pricing on request
Free plan Not checked yet Not checked yet
Free trial — —
Deployment Self-hosted Self-hosted, Cloud
Support Community, Docs, Email Email, Community, Docs · 24/7
Integrations 4 integrations 4 integrations
Built for Mid-market, Enterprise Mid-market, Enterprise
Features Apache Ignite 0/4 · Tarantool DB 0/4
Data persistence Not checked yet Not checked yet
High availability Not checked yet Not checked yet
SQL support Not checked yet Not checked yet
Vector search Not checked yet Not checked yet
Specs
Deployment Not checked yet Not checked yet
Included memory Not checked yet Not checked yet
Supported data models Not checked yet Not checked yet
Our review
Pros
  • Memory-first SQL with optional in-memory and persistent storage
  • ACID transactions, replication, clustering, and distributed compute
  • JDBC, ODBC, REST, Spring Data, and native client connectivity
  • Supports key-value, table, and document data models
  • Combines persistence, replication, sharding, and ACID transactions
  • Exports metrics to Prometheus and Grafana
Cons
  • Ignite 2 and Ignite 3 require a generation choice
  • TTL support differs between Ignite 2 and Ignite 3
  • Distributed deployment requires architecture and operational planning
  • Self-hosted deployment places infrastructure management with the team
  • In-memory storage can require careful resource planning
  • Redis compatibility covers Redis data types and 60+ commands
Our verdict

Apache Ignite is an open-source, memory-first distributed SQL database for mission-critical, high-velocity applications. It suits teams building distributed services that need SQL and key-value access, ACID transactions, persistent or…

Read the review →

Tarantool DB is an open-source, self-hosted in-memory NoSQL database for organizations building high-load, real-time services and core-system caches. It supports key-value, table, and document data models, along with CRUD operations,…

Read the review →
  1. Apache IgniteIn-Memory Databases 9.2Open source
  2. Tarantool DBIn-Memory Databases 8.6Pricing on request

Strengths and trade-offs

  • Apache Ignite — where it wins

    • Memory-first SQL with optional in-memory and persistent storage
    • ACID transactions, replication, clustering, and distributed compute
    • JDBC, ODBC, REST, Spring Data, and native client connectivity

    Where it doesn't

    • Ignite 2 and Ignite 3 require a generation choice
    • TTL support differs between Ignite 2 and Ignite 3
    • Distributed deployment requires architecture and operational planning
  • Tarantool DB — where it wins

    • Supports key-value, table, and document data models
    • Combines persistence, replication, sharding, and ACID transactions
    • Exports metrics to Prometheus and Grafana

    Where it doesn't

    • Self-hosted deployment places infrastructure management with the team
    • In-memory storage can require careful resource planning
    • Redis compatibility covers Redis data types and 60+ commands

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update