In the rapidly evolving database ecosystem, understanding the End-of-Support (EOS) and End-of-Life (EOL) schedules for each Tarantool version is crucial for maintaining stable operations. This comprehensive guide covers the support timeline for all Tarantool versions.

1. What is Tarantool? – High-Performance In-Memory Computing Platform

Tarantool is an open-source in-memory database and application server developed in Russia, distributed under the BSD 2-Clause license. This solution goes beyond a simple database to serve as a complete computing platform.

Key features include a high-performance scripting engine based on LuaJIT, cooperative multitasking, asynchronous I/O, persistent queues, sharding, and MySQL/PostgreSQL integration capabilities. Its ability to process data at ultra-high speeds in memory makes it widely used in web services handling large-scale traffic and real-time analytics systems.

2. New Release Policy – Clearer Version Management System

Since 2023, Tarantool has reformed its previously complex release policy to a SemVer-like format. The new policy uses MAJOR.MINOR.PATCH format and has been applied since version 2.10.0.

Key changes in the new policy:

• Third version number: Previously distinguished between pre-release/stable versions, now used for patch (bugfix-only) releases
• Pre-release notation: Changed to suffix format like 3.0.0-alpha1, 3.0.0-beta2
• LTS series: Unlike before when only 1.10 was LTS, now 2.11 is also an LTS version with 4-year support

3. Currently Supported Tarantool Versions (September 2025)

Currently active supported Tarantool versions:

Community Edition Supported Versions

Enterprise Edition (Tarantool Data Grid) Supported Versions

Importance of LTS Version 2.11

Tarantool 2.11 is currently the only Long-Term Support (LTS) version, guaranteed maintenance for 4 years. Released in May 2023 and supported until May 2027, it’s recommended for enterprise customers seeking stable operating environments.

Considerations when choosing 2.11 LTS:

• ✅ 4-year long-term support: Stable maintenance until May 2027
• ✅ Production-proven: Sufficient operational experience accumulated
• ✅ Backward compatibility: Full compatibility from 1.10.x
• ✅ Enterprise foundation: Base version for TDG 2.12.x
• ⚠️ Limitation: Cannot use latest 3.x features

4. End-of-Life Versions

These Tarantool versions no longer receive security patches or bug fixes. If you’re using any of these versions, immediate upgrade to supported versions is required:

2.x Series EOL Versions (Complete List)

1.x Series EOL Versions (Complete List)

Major EOL Milestones

• Early 2024: Tarantool 1.10 LTS support ended
• 2023: 2.10.x and 2.9.x series support ended
• 2022: 2.8.x, 2.7.x series support ended
• 2021: 2.6.x ~ 2.4.x series support ended
• 2020: 2.3.x, 2.2.x series support ended

⚠️ Immediate Upgrade Required

Immediate upgrade is required if you fall into any of these categories:

• Using 2.10.x or earlier versions
• Exposed to security vulnerabilities
• Unable to receive technical support

5. Tarantool Version Lifecycle – From Development to EOL

Each Tarantool release series follows these stages:

Early Development Stage

• Alpha versions: Features under development, may be unstable (e.g., 3.0.0-alpha1)
• Beta versions: All planned features implemented (e.g., 3.0.0-beta1)
• Release candidates: Final stabilization phase (e.g., 3.0.0-rc1)

Support Stage

• Starts from first stable release
• Minimum 2-year support (standard versions)
• 4-year support (LTS versions)
• Backward compatibility guaranteed
• Security patches and bug fixes provided

End of Life

• No more patches or updates provided
• Technical support discontinued

End of Support

• Complete cessation of technical support after EOL
• Customer support and inquiry responses stopped

6. Detailed Version Release History and Patch Information

Current Active Support Versions Detailed Patch History

Tarantool 3.x Series Details

Tarantool 2.11 LTS Details (Important)

EOL Versions Final Patch Information

2.10 Series (EOL) – First New Policy Application

Legacy 2.x Series Final Versions

1.10 LTS Detailed History (EOL)

7. Tarantool Enterprise Edition (TDG) Support Information

Tarantool Data Grid (TDG) Latest Versions

Tarantool’s commercial Enterprise Edition (TDG) follows a separate release cycle from Community Edition:

Enterprise vs Community Key Differences

8. Upgrade Recommendations and Compatibility Information

Current Recommended Versions

The Tarantool development team currently recommends the 3.x series, with 2.11 users encouraged to upgrade to the latest 3.x versions.

Production Environment Recommended Versions:

• New Projects: Tarantool 3.5 (latest stable version)
• Conservative Operations: Tarantool 2.11 LTS (supported until 2027)
• Test/Development: Latest Tarantool 3.x version

Compatibility Guarantees

• Within same series: Full backward compatibility guaranteed
• Cross-series: 2.x ↔ 3.x binary data compatibility
• Protocols: Client-server and replication protocol compatibility
• Zero-downtime upgrades: No downtime for read requests, network-latency-level downtime for write requests

9. EOL Preparedness Practical Guide

Immediate Actions for EOL Version Users

1. Check Current Version

   # Check version from command line
   tarantool --version
   
   # Check from Tarantool console
   tarantool> _TARANTOOL
   tarantool> box.info.version
   

2. Establish Upgrade Plan
   • If current version is in EOL list, establish immediate upgrade plan
   • Essential compatibility testing in test environment
   • Prepare data backup and recovery plan in advance
3. Migration Procedure

   -- Schema upgrade required after upgrade
   box.schema.upgrade()
   

Monitoring and Alert Setup

To avoid missing EOL schedules, the following methods are recommended:

Official Information Source Monitoring

Automated Monitoring Setup

# 1. GitHub notification subscription (recommended)
# On GitHub, go to tarantool/tarantool repository "Watch" -> "Custom" -> "Releases"

# 2. RSS feed subscription
# https://github.com/tarantool/tarantool/releases.atom

# 3. Current version check script
#!/bin/bash
echo "Currently installed Tarantool version:"
tarantool --version
echo "Check latest release info at https://github.com/tarantool/tarantool/releases"

Regular Inspection Checklist

• [ ] Monthly: Check support status of currently used versions
• [ ] Quarterly: Check for new LTS or recommended version releases
• [ ] Semi-annually: Review upgrade plans and update test environments
• [ ] Annually: Complete infrastructure version audit and establish EOL roadmap

10. Special Considerations for Enterprise Users

Tarantool Enterprise Edition vs Community Edition Support Policy

Support Duration Comparison

Critical EOL Milestones and Response Strategies

2025 Key Events

• Current: All 2.10.x and earlier versions in EOL status
• Recommended Action: Immediate upgrade to 2.11 LTS or latest 3.x version

2027 Key Events

• May 2027: Tarantool 2.11 LTS support end scheduled
• Preparation Period: Approximately 1.5 years remaining
• Recommended Action: Establish migration plan to 3.x LTS or next LTS version by mid-2026

Enterprise Response Roadmap

Immediate Actions Required (Q4 2025)

✅ Current environment audit
✅ EOL version identification
✅ Upgrade priority setting
✅ Test environment configuration

Short-term Plan (H1 2026)

📋 3.x series compatibility testing
📋 Data migration testing
📋 Application compatibility verification
📋 Performance benchmarking

Long-term Plan (H2 2026 – H1 2027)

🎯 Production environment upgrade
🎯 2.11 LTS replacement version confirmation
🎯 Next LTS release waiting
🎯 Complete migration completion

Enterprise Edition User Benefits

Extended Support Options

• Extended Support: Additional support contracts available beyond EOL
• Custom Patches: Tailored patches for specific customers
• Migration Services: Dedicated migration consulting
• Priority Support: Priority technical support

SLA Guarantees

• Response Time: Response within 4 hours (Critical issues)
• Resolution Time: Solution provision within 24 hours
• Availability: 99.9%+ service availability
• Updates: Priority security patch provision

Understanding and preparing for Tarantool’s EOL schedule is fundamental to stable service operations. If you’re currently using EOL versions 2.10.x or earlier, immediate upgrade to supported versions is recommended.

The 2.11 LTS version receives stable support until 2027, making it suitable for conservative operating environments. For those wanting to utilize the latest features, consider upgrading to the 3.x series. Always conduct thorough testing in test environments before upgrading. 🙂