Agentic AI Reference Architecture

Memory · Software component

Full Conversation Buffer

Software componentMemoryCognition & Memoryarc:FullConversationBuffer

A context window manager that appends every human message and agent response to history and injects the complete, untruncated history into each prompt.

Responsibility. Supplies the complete conversation history to every prompt.

Also known as: ConversationBufferMemory, Chat history memory, Uncompressed history

Variant of Context Window Manager abstract

When to choose. Choose for moderate conversation lengths (roughly 10-20 exchanges) where perfect recall of prior turns matters; switch to sliding-window or summarizing variants when history approaches token limits.

reads; writesis invoked byspecializesalternative toalternative toalternative toConversation State Store: reads; writesConversation State StoreReAct Agent Controller: is invoked byReAct Agent ControllerContext Window Manager: specializesContext Window ManagerSummarizing History Compressor: alternative toSummarizing History Comp…Hierarchical History Compressor: alternative toHierarchical History Com…Sliding-Window History Truncator: alternative toSliding-Window History T…
Direct neighbourhood (hover for relationship types)

Relationships

is invoked by dependency

reads dependency

writes dependency

alternative to variability

Design guidance

Quantitative guidance

As stated by the sources; verify before use.

Classification

Patterns
Pronoun and follow-up resolution via history
Technologies
LangChain
Quality attributes
Functional suitability: correctness and validity (ISO/IEC 25010 | NIST AI RMF: valid)Maintainability (ISO/IEC 25010)
Risks mitigated
Unresolvable follow-up questions

Sources

  1. Ch2.3: T. Nguyen, "LangChain Sequential Frameworks," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 2.3. ISBN: 9798244538229.
  2. Ch3.4: T. Nguyen, "Tuning Model Parameters for Production Performance," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 3.4. ISBN: 9798244538229.
  3. Ch5.9: T. Nguyen, "Working Memory," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 5.9. ISBN: 9798244538229.
  4. Ch10.1: T. Nguyen, "Conversational UI," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 10.1. ISBN: 9798244538229.