Topic

LlamaIndex Chat Engines & Memory

12 posts on llamaindex chat engines & memory — part of framework tutorials on the n4n AI blog.

Token limits and chat memory truncation in LlamaIndex

A practical guide to handling token limits and chat memory truncation in LlamaIndex with working code patterns and production tradeoffs.

July 27, 20264 min read

Framework tutorialsHow-to

Persisting LlamaIndex chat history across sessions

A practical guide to persisting LlamaIndex chat history across sessions using ChatMemoryBuffer with Redis, Postgres, or file storage — complete with runnable code and verification steps.

July 27, 20264 min read

Framework tutorialsGuide

Multi-turn RAG conversations in LlamaIndex

Build multi-turn RAG conversations in LlamaIndex with chat engines, memory buffers, and context compression — practical patterns for production systems.

July 27, 20265 min read

Framework tutorialsComparison

LlamaIndex chat store: Redis vs in-memory

Compare LlamaIndex chat stores: Redis vs in-memory across persistence, latency, cost, and scaling. Code examples and a clear verdict for each use case.

July 27, 20265 min read

Framework tutorialsComparison

LlamaIndex SimpleChatEngine vs ContextChatEngine

Technical comparison of LlamaIndex SimpleChatEngine and ContextChatEngine — capabilities, trade-offs, and when to use each.

July 25, 20266 min read

Framework tutorialsGuide

LlamaIndex chat memory buffer: how it works

A practical guide to LlamaIndex's ChatMemoryBuffer — how token limits work, when to use summarization, and common pitfalls in production chat applications.

July 25, 20264 min read

Framework tutorialsHow-to

LlamaIndex chat engine with streaming responses

Build a LlamaIndex chat engine with streaming responses — step-by-step setup, memory integration, and verification.

July 25, 20264 min read

Framework tutorialsTutorial

LlamaIndex chat engine with n4n.ai and Claude models

Build a production-ready LlamaIndex chat engine using n4n.ai's OpenAI-compatible endpoint to access Claude models with automatic fallback and token metering.

July 25, 20263 min read

Framework tutorialsComparison

LlamaIndex chat engines explained: context vs condense

Compare LlamaIndex ContextChatEngine and CondenseChatEngine in this llamaindex chat engine tutorial: cost, latency, ergonomics, and verdicts.

July 19, 20265 min read

Framework tutorialsTutorial

Building a customer support bot with LlamaIndex

Step-by-step llamaindex customer support chatbot tutorial: index docs, wire a context chat engine with memory, and run a local support bot with Python.

July 19, 20262 min read

Framework tutorialsTutorial

Build a chatbot with LlamaIndex CondensePlusContext

Step-by-step llamaindex condensepluscontext chatbot tutorial: build a context-aware chat engine with LlamaIndex, handle conversation history, and run it.

July 19, 20264 min read

Framework tutorialsHow-to

Add long-term memory to a LlamaIndex chat engine

Learn how to add persistent cross-session memory to a LlamaIndex chat engine with Redis in this hands-on llamaindex long-term memory chat engine tutorial.

July 19, 20263 min read