Product Roadmap

The 2026 roadmap for TDengine OSS is described in the following table.

Quarter	Feature
2026Q1	<ol><li>Storage: batch tag modification, dynamic adjustment of last cache LRU</li><li>Query: subqueries, external windows, ANY/SOME/ALL/EXISTS operators, window and interpolation enhancements, Explain and ShowQueries optimization</li><li>Virtual Tables: virtual table query performance optimization, subscription to virtual table metadata changes, validation of references between virtual tables and source tables</li><li>Stream: triggering by natural week/month/quarter/year, true_for conditions for event and state window triggers support duration and count, grouped computation performance optimization, virtual supertable triggering supports child table additions/deletions/modifications</li></ol>
2026Q2	<ol><li>Storage: multi-replica leader switching and node recovery optimization, last cache optimization (such as forced refresh, multi-column write optimization, specified column caching)</li><li>Query: federated query demo version, relaxed window query restrictions, time windows support week/month/quarter/year, Interp performance improvement</li><li>Functions: window functions and OVER clause</li><li>Virtual Tables: virtual table inheritance, virtual tables referencing virtual tables, virtual supertable column name modification</li><li>Stream: performance optimization for multiple customer scenarios, performance optimization for multi-measurement point scenarios, historical computation performance optimization, virtual table triggering performance optimization</li><li>TDgpt: model lifecycle management, predictive maintenance, minute-level timezone support</li></ol>
2026Q3	<ol><li>Storage: improved data splitting and migration performance, data reorganization without affecting writes, disk rate limiting</li><li>Query: official release of federated queries, complex query performance optimization, scalar correlated subqueries, cumulative windows, SQL testing tools</li><li>Functions: 15 customer-requested functions</li><li>Virtual Tables: subscription to virtual table data through continuous queries</li><li>Stream: maintainability improvement</li><li>Others: TDgpt supports PCA, PLS, cluster analysis</li></ol>
2026Q4	<ol><li>Storage: full and incremental backup, TEXT data type, variable-length string data type, database name modification, column name modification</li><li>Query: further enhancement of join queries, query parallelization, addition of observability metrics</li><li>Functions: support for MySQL operators and functions, UDF function framework refactoring</li><li>Others: engine CPU and memory management</li></ol>