viveknaskar

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

viveknaskar

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

@SuppressWarnings("unchecked")
public class FlattenedToNestedMapExample {
    public static Map<String, Object> unflatten(Map<String, Object> flatMap) {
        Map<String, Object> nestedMap = new LinkedHashMap<>();
        flatMap.forEach((flatKey, value) -> {
            String[] keys = flatKey.split("\\.");

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import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

@SuppressWarnings("unchecked")
public class DeepMergeMapsExample {
    public static Map<String, Object> deepMerge(Map<String, Object> baseMap, Map<String, Object> updateMap) {
        Map<String, Object> result = new LinkedHashMap<>(baseMap);
        updateMap.forEach((key, updateValue) -> {
            if (result.containsKey(key) && result.get(key) instanceof Map && updateValue instanceof Map) {

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import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

public class MapAggregationExample {
    public static void main(String[] args) {
        List<Map<String, Object>> products = Arrays.asList(
            createProduct("Laptop", "Electronics", 1200.00),
            createProduct("Mouse", "Electronics", 25.00),

viveknaskar

import com.viveknaskar.smsalertsystem.domain.AlertMessage;
import com.viveknaskar.smsalertsystem.domain.User;
import com.viveknaskar.smsalertsystem.service.AlertService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

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import com.twilio.rest.api.v2010.account.Message;
import com.twilio.type.PhoneNumber;
import com.viveknaskar.smsalertsystem.domain.AlertMessage;
import com.viveknaskar.smsalertsystem.domain.User;
import com.viveknaskar.smsalertsystem.service.AlertService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class AlertServiceImpl implements AlertService {

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#Twilio platform credentials
twilio.account.sid=<your-twilio-account-sid>
twilio.auth.token=<your-twilio-auth-token>

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import com.twilio.Twilio;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;

@Configuration
public class TwilioConfig {

    @Value("${twilio.account.sid}")

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<dependencies>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-test</artifactId>
		<scope>test</scope>
	</dependency>

viveknaskar

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class ExceptionallyExample {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        int val = 0;
        CompletableFuture<String> completableFuture = CompletableFuture.supplyAsync(() -> {
            if(val == 0) {
                throw new IllegalArgumentException("Value is 0");
            }