Next-Gen Pub/Sub System: AI-Optimized, QUIC-Enhanced, and Sustainability-Focused [Draft]
Revolutionizing cloud messaging with pull-based retrieval, AI-driven scaling, and sustainable computing. Our next-generation publish-subscribe system combines cutting-edge QUIC transport with blockchain sustainability tracking for optimal performance.
Architecture Overview
Pull-Based Subscriber Retrieval
Messages are temporarily stored in Firestore with configurable TTL, allowing subscribers to pull messages within the defined period for controlled consumption.
QUIC-Optimized Transport
QUIC-based connections replace traditional HTTP/TCP, improving latency and throughput with multiplexed streams for concurrent pulls.
AI-Driven Auto-Scaling
AI monitors system resources and predicts scaling needs before traffic surges, while Kubernetes automatically adjusts broker resources.
Security via Google IAM
IAM roles limit topic creation and publishing, authenticate subscribers, and provide comprehensive auditing of access attempts.
Implementation Details: QUIC-Based Retrieval
📌 Consideration of Protocols
Our QUIC-based subscriber retrieval system enables efficient message consumption with several key advantages:
  • Subscribers actively retrieve messages from persistent storage
  • Messages remain available within TTL before automatic expiration
  • QUIC-based transport ensures fast, encrypted retrieval
This approach gives subscribers control over their message consumption rate while maintaining high performance and security.
using System.Net.Quic; using System.Text.Json; using PubSub.Models; public class SubscriberService { private readonly string _serverAddress = "127.0.0.1"; private readonly int _port = 4433; public async Task FetchMessages() { using var connection = await QuicConnection.ConnectAsync( new IPEndPoint(System.Net.IPAddress.Parse(_serverAddress), _port), new QuicConnectionOptions()); var stream = await connection.OpenOutboundStreamAsync(); await stream.WriteAsync(System.Text.Encoding.UTF8.GetBytes("Fetch Pending Messages")); var buffer = new byte[1024]; var result = await stream.ReadAsync(buffer); var messageJson = System.Text.Encoding.UTF8.GetString(buffer, 0, result); var message = JsonSerializer.Deserialize(messageJson); Console.WriteLine($"Retrieved Message: {message.Header.MessageId}"); } }
AI-Based Auto-Scaling for Efficient Resource Management
Monitor Resources
Track CPU, memory, bandwidth, and subscriber load in real-time
Predict Scaling Needs
AI model forecasts resource requirements before traffic spikes
Adjust Resources
Kubernetes automatically scales broker instances based on predictions
Optimize Performance
Maintain optimal performance while preventing resource waste
import pandas as pd import numpy as np from sklearn.ensemble import RandomForestRegressor from sklearn.model_selection import train_test_split data = pd.read_csv("pubsub_metrics.csv") X = data[["cpu_usage", "memory_usage", "network_bandwidth", "message_throughput", "subscriber_count"]] y = data["scale_up_needed"] X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) model = RandomForestRegressor(n_estimators=100) model.fit(X_train, y_train) future_load = model.predict([[85, 8, 400, 2000, 1500]]) print("Scaling Decision:", "Scale Up" if future_load[0] > 0.7 else "Stable")
Sustainability Monitoring for Green Computing
0.4
kg COâ‚‚ per kWh
Carbon intensity factor used in calculations
100%
Tracked Operations
All Pub/Sub transactions monitored for emissions
24/7
Real-Time Monitoring
Continuous carbon footprint assessment
public class CarbonMonitor { private const double CARBON_INTENSITY = 0.4; // kg CO2 per kWh public async Task CalculateCarbonFootprint(double cpuPower, double memoryPower, double networkPower) { double totalPower = cpuPower + memoryPower + (networkPower / 1000); // Convert bandwidth to kWh double carbonEmissions = totalPower * CARBON_INTENSITY; Console.WriteLine($"Real-Time Carbon Emissions: {carbonEmissions} kg COâ‚‚"); return carbonEmissions; } }
Our system tracks real-time energy consumption of all Pub/Sub operations, stores carbon offset contributions in blockchain for auditability, and encourages sustainable computing by reducing unnecessary workloads.
Benefits of This Pub/Sub Model
Pull-Based Retrieval Enhances Efficiency
Subscribers fetch messages instead of handling forced push-based floods, giving them control over consumption rate and preventing overwhelming message influx.
QUIC-Based Transport Improves Latency
High-speed encrypted delivery ensures low-latency transactions with multiplexed streams for concurrent message retrieval, significantly improving throughput.
AI Ensures Dynamic Scaling Before Bottlenecks
Predictive scaling reduces server downtime and optimizes load balance by anticipating resource needs before traffic spikes occur.
Green Computing Minimizes Carbon Footprint
Sustainability tracking prevents excessive compute expansion while blockchain enables transparency in environmental efforts through verifiable offset contributions.
Conclusion

5

High Performance
QUIC-based low-latency retrieval
Enhanced Security
IAM-based access control
Intelligent Scaling
AI-driven resource optimization
Sustainable Computing
Blockchain-verified carbon tracking
5
Efficient Message Handling
Pull-based retrieval with TTL
By transitioning to a pull-based Pub/Sub model, we ensure better efficiency, optimized resource allocation, and low-latency retrieval using QUIC. This architecture offers a high-performance, secure, and environmentally-conscious messaging system for modern cloud applications.