NestJS
06 Persistence
Persist NestJS chat history through application services.
Use Nest services or repositories for session storage. Anvia should not own your database boundary.
1. Load Existing Messages
const session = await this.chatSessions.findForUser({
sessionId: input.sessionId,
userId: input.userId,
});
if (!session) {
throw new NotFoundException("Session not found");
}2. Send With History
const response = await this.agent
.prompt(input.message)
.messages(session.messages.map((item) => item.message))
.send();3. Store New Messages
await this.chatMessages.createMany(
response.messages.map((message) => ({
sessionId: session.id,
message,
})),
);Keep transaction ownership in your application services when message writes must commit with business records.
4. Use Memory When The Model Should Remember
Use chat history for the current conversation. Use Anvia memory for durable user or domain facts that should survive across sessions.
Next
Prepare runtime constraints in Deploy. Related guides: Memory, Memory and Sessions, and Agent History.