Llama 3.1 70B: Technical Analysis

const express = require('express');
const { Worker } = require('worker_threads');
const cluster = require('cluster');
const os = require('os');

class Llama70BEnterpriseServer {
    constructor() {
        this.app = express();
        this.numWorkers = os.cpus().length;
        this.workerPool = [];
        this.setupMiddleware();
        this.setupRoutes();
        this.initializeWorkerPool();
    }

    setupMiddleware() {
        this.app.use(express.json({ limit: '50mb' }));
        this.app.use(express.urlencoded({ extended: true, limit: '50mb' }));

        // Enterprise-grade rate limiting
        const rateLimit = require('express-rate-limit');
        const limiter = rateLimit({
            windowMs: 60 * 1000, // 1 minute
            max: 100, // limit each IP to 100 requests per windowMs
            message: 'Too many requests from this IP'
        });
        this.app.use('/api/', limiter);
    }

    setupRoutes() {
        // Health check endpoint
        this.app.get('/health', (req, res) => {
            res.json({
                status: 'healthy',
                model: 'llama3.1:70b',
                workers: this.numWorkers,
                uptime: process.uptime()
            });
        });

        // Document analysis endpoint
        this.app.post('/api/analyze-document', async (req, res) => {
            try {
                const { document, analysisType = 'comprehensive' } = req.body;

                if (!document) {
                    return res.status(400).json({
                        error: 'Document content is required'
                    });
                }

                const result = await this.processWithWorker('analyze', {
                    document,
                    analysisType,
                    maxTokens: 4096,
                    temperature: 0.3
                });

                res.json({
                    result,
                    processingTime: result.processingTime,
                    model: 'llama3.1:70b'
                });
            } catch (error) {
                res.status(500).json({ error: error.message });
            }
        });

        // Extended conversation endpoint
        this.app.post('/api/conversation', async (req, res) => {
            try {
                const { messages, maxContext = 131072 } = req.body;

                if (!Array.isArray(messages) || messages.length === 0) {
                    return res.status(400).json({
                        error: 'Valid messages array is required'
                    });
                }

                const result = await this.processWithWorker('chat', {
                    messages,
                    maxContext,
                    temperature: 0.7,
                    maxTokens: 2048
                });

                res.json({
                    response: result.response,
                    contextUsed: result.contextUsed,
                    processingTime: result.processingTime
                });
            } catch (error) {
                res.status(500).json({ error: error.message });
            }
        });

        // Code generation endpoint
        this.app.post('/api/generate-code', async (req, res) => {
            try {
                const { requirements, framework = 'python', architecture = 'microservices' } = req.body;

                if (!requirements) {
                    return res.status(400).json({
                        error: 'Requirements are required'
                    });
                }

                const result = await this.processWithWorker('generate', {
                    requirements,
                    framework,
                    architecture,
                    temperature: 0.2,
                    maxTokens: 8192
                });

                res.json({
                    code: result.code,
                    structure: result.structure,
                    processingTime: result.processingTime
                });
            } catch (error) {
                res.status(500).json({ error: error.message });
            }
        });

        // Streaming endpoint for real-time applications
        this.app.post('/api/stream', (req, res) => {
            const { prompt } = req.body;

            res.setHeader('Content-Type', 'text/event-stream');
            res.setHeader('Cache-Control', 'no-cache');
            res.setHeader('Connection', 'keep-alive');

            this.processWithWorker('stream', {
                prompt,
                temperature: 0.7,
                maxTokens: 4096
            }).then(stream => {
                stream.on('data', (chunk) => {
                    res.write(`data: ${JSON.stringify(chunk)}

`);
                });
                stream.on('end', () => {
                    res.end();
                });
            }).catch(error => {
                res.write(`data: ${JSON.stringify({ error: error.message })}

`);
                res.end();
            });
        });
    }

    initializeWorkerPool() {
        for (let i = 0; i < this.numWorkers; i++) {
            const worker = new Worker('./llama-worker.js', {
                workerData: { workerId: i }
            });

            worker.on('error', (error) => {
                console.error(`Worker ${i} error:`, error);
            });

            worker.on('exit', (code) => {
                if (code !== 0) {
                    console.error(`Worker ${i} stopped with exit code ${code}`);
                    // Restart worker
                    this.workerPool[i] = new Worker('./llama-worker.js', {
                        workerData: { workerId: i }
                    });
                }
            });

            this.workerPool.push(worker);
        }
    }

    async processWithWorker(task, params) {
        return new Promise((resolve, reject) => {
            // Simple round-robin worker selection
            const worker = this.workerPool[Math.floor(Math.random() * this.workerPool.length)];

            const taskId = Date.now() + Math.random();

            const timeout = setTimeout(() => {
                reject(new Error('Worker timeout'));
            }, 30000); // 30 second timeout

            worker.once('message', (result) => {
                clearTimeout(timeout);
                if (result.taskId === taskId) {
                    resolve(result.data);
                }
            });

            worker.postMessage({
                taskId,
                task,
                params
            });
        });
    }

    start() {
        const PORT = process.env.PORT || 3000;
        this.app.listen(PORT, () => {
            console.log(`Llama 3.1 70B Enterprise Server running on port ${PORT}`);
            console.log(`Workers: ${this.numWorkers}`);
            console.log(`Model: llama3.1:70b`);
        });
    }
}

// Worker process (llama-worker.js)
if (require.main === module) {
    const { parentPort } = require('worker_threads');
    const { spawn } = require('child_process');

    parentPort.on('message', async (data) => {
        const { taskId, task, params } = data;

        try {
            let result;
            const startTime = Date.now();

            switch (task) {
                case 'analyze':
                    result = await analyzeDocument(params);
                    break;
                case 'chat':
                    result = await processConversation(params);
                    break;
                case 'generate':
                    result = await generateCode(params);
                    break;
                case 'stream':
                    result = await streamResponse(params);
                    break;
            }

            const processingTime = Date.now() - startTime;

            parentPort.postMessage({
                taskId,
                data: { ...result, processingTime }
            });
        } catch (error) {
            parentPort.postMessage({
                taskId,
                error: error.message
            });
        }
    });
}

// Initialize and start server
const server = new Llama70BEnterpriseServer();
server.start();