Memory is what gives agents continuity, personalization, and depth—but managing it is far from simple. This talk explores current best practices in agentic memory, from short-term working memory with summarization to long-term stores with semantic retrieval and metadata filters. We’ll cover how modern systems handle promotion, deduplication, and background consolidation, as well as how protocols like MCP expose memory as first-class tools. We'll illustrate design trade-offs and practical strategies for building memory-aware agents in Java.