roadmap.md

TiDB Roadmap

This roadmap brings you what's coming in the 1-year future, so you can see the new features or improvements in advance, follow the progress, learn about the key milestones on the way, and give feedback as the development work goes on. In the course of development, this roadmap is subject to change based on user needs and feedback. If you have a feature request or want to prioritize a feature, please file an issue on GitHub.

Highlights of what we are planning

Category	Mid-year LTS release	End-of-year LTS release	2-3 year projection
Scalability and Performance Enhance horsepower	General plan cache Improve general read performance Partitioned Raft KV storage engine Provide increased write velocity, faster scaling operations, larger clusters TiFlash performance boost Implement TiFlash optimization such as late materialization and runtime filter Fastest online DDL distributed framework Complete the distributed framework to support the fastest online DDL	Stability at PB scale Provide reliable and consistent performance for tremendous data Disaggregate TiFlash compute and storage (auto-scaling) Realize elastic HTAP resource utilization TiFlash S3 based storage engine Provide shared storage at lower cost	Next generation, more powerful storage engine Unlimited transaction size Multi-model support
Reliability and Availability Enhance dependability	Resource control: quotas and scheduling for resource groups and background tasks Reliably and efficiently manage workloads and applications that share the same cluster TiCDC/PITR recovery objective enhancements Increase business continuity and minimize the impact of system failures TiProxy Keep database connections during cluster upgrade and scale in/out, and avoid impact on applications End-to-end data correctness check Prevent data error or corruption through TiCDC	Multi-tenancy Provide fine-grained resource control and isolation to reduce cost Improved cluster/node level fault tolerance Enhance cluster resilience TiFlash spill to disk Avoid TiFlash OOM	Enhanced TiDB memory management Global table
SQL Enhance functionality and compatibility	Production-ready TTL (time-to-live) data management Manage database size and improve performance by automatically expiring outdated data Table level flashback Support traveling a single table to a specific time via SQL	Materialized views Support pre-calculation to boost query performance	Federated query Cascades optimizer Full text search & GIS support User-defined functions
Database Operations and Observability Enhance DB manageability and its ecosystem	Distributed TiCDC single table replication Dramatically improve TiCDC throughput by distributing the workload to multiple nodes Production-ready TiCDC sink to Amazon S3 and Azure object storage Enhance ecosystem to better work with big data TiDB Operator fast scale-in Improve from scaling in one by one to scaling in at once SQL-based data import Improve user-friendliness through operational enhancements	Major performance boost for data import Expect 3-4 times of improvements Multiple upstreams for TiCDC Support N:1 TiDB to TiCDC SQL-based data management Improve data management for TiCDC, data migration, and backup and restore tools Automatic pause/resume DDL during upgrade Ensure a smooth upgrade experience	AI-indexing Heterogeneous database migration support Re-invented AI-SQL performance advisor
Security Enhance data safety and privacy	JWT authentication Provide secure and standard authentication LDAP integration Authenticate via LDAP server over TLS Audit log enhancement Enhance logs with greater details	Column-level/row-level access control Provide finer-grained control Database encryption Support data-at-rest encryption for database files Unified TLS CA/Key rotation policy Enhance security and operational efficiency for all TiDB components	Enhanced client-side encryption Enhanced data masking Enhanced data lifecycle management

These are non-exhaustive plans and subject to change. Features may differ per service subscriptions.

Recently shipped

• TiDB 6.6.0 Release Notes
• TiDB 6.5.0 Release Notes