Update 8-0.md

Author: ViktarStarastsenka

content/develop/whats-new/8-0.md

@@ -37,6 +37,8 @@ The new `Vector set` data structure supports high-dimensional vector similarity
 Redis 8 introduces a native JSON data structure, enabling you to store and manipulate hierarchical documents directly. JSONPath expressions are supported for targeted reads and updates. Atomic operations allow modification of individual fields without fetching the entire document, making it ideal for session management, user profiles, and modern web applications.
 
 #### Time series
+A time series in Redis allows storing and querying a series of timestamped data points (samples), typically representing how a metric changes over time.
+
 The time series data structure is optimized for high-ingestion workloads with time-stamped data—such as IoT, telemetry, and financial applications. Redis 8 applies efficient compression algorithms to reduce memory usage and supports downsampling (compaction) rules for long-term retention.
 
 #### Probabilistic data structures