@codai/cbd
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Codai Better Database - High-Performance Vector Memory System with HPKV-inspired architecture and MCP server
360 lines • 11.4 kB
JavaScript
/**
* Performance Optimization Manager
* Connection pooling, caching, and resource optimization
*/
import { EventEmitter } from 'events';
import { performance } from 'perf_hooks';
class PerformanceOptimizationManager extends EventEmitter {
connectionPool;
cacheManager;
resourceMonitor;
queryOptimizer;
performanceMetrics = {
requestsPerSecond: 0,
averageResponseTime: 0,
memoryUsage: process.memoryUsage(),
cpuUsage: 0,
cacheHitRate: 0,
connectionPoolUtilization: 0
};
isOptimizing = false;
constructor(config) {
super();
this.connectionPool = new ConnectionPool(config.connectionPool);
this.cacheManager = new IntelligentCacheManager(config.cache);
this.resourceMonitor = new ResourceMonitor(config.monitoring);
this.queryOptimizer = new QueryOptimizer();
this.initializeOptimization();
}
initializeOptimization() {
// Start performance monitoring
this.resourceMonitor.start();
// Setup automatic optimization
this.setupAutoOptimization();
// Initialize performance tracking
this.initializePerformanceTracking();
}
/**
* Connection Pool Management
*/
async acquireConnection() {
const startTime = performance.now();
try {
const connection = await this.connectionPool.acquire();
this.emit('connectionAcquired', {
duration: performance.now() - startTime,
poolSize: this.connectionPool.size,
activeConnections: this.connectionPool.activeCount
});
return connection;
}
catch (error) {
this.emit('connectionError', { error, duration: performance.now() - startTime });
throw error;
}
}
async releaseConnection(connection) {
try {
await this.connectionPool.release(connection);
this.emit('connectionReleased', {
poolSize: this.connectionPool.size,
activeConnections: this.connectionPool.activeCount
});
}
catch (error) {
this.emit('connectionReleaseError', { error });
throw error;
}
}
/**
* Intelligent Caching System
*/
async getCached(key) {
const startTime = performance.now();
try {
const result = await this.cacheManager.get(key);
this.emit('cacheAccess', {
key,
hit: result !== null,
duration: performance.now() - startTime
});
return result;
}
catch (error) {
this.emit('cacheError', { key, error });
return null;
}
}
async setCached(key, value, ttl) {
try {
await this.cacheManager.set(key, value, ttl);
this.emit('cacheSet', {
key,
size: this.cacheManager.size,
memoryUsage: this.cacheManager.memoryUsage
});
}
catch (error) {
this.emit('cacheSetError', { key, error });
throw error;
}
}
/**
* Query Optimization
*/
async optimizeQuery(query, params) {
const startTime = performance.now();
try {
const result = await this.queryOptimizer.optimize(query, params);
this.emit('queryOptimized', {
originalQuery: query,
optimizedQuery: result.optimizedQuery,
optimizationTime: performance.now() - startTime,
performanceGain: result.estimatedPerformance
});
return result;
}
catch (error) {
this.emit('queryOptimizationError', { query, error });
throw error;
}
}
/**
* Memory Optimization
*/
async optimizeMemoryUsage() {
const startMemory = process.memoryUsage();
const actions = [];
try {
// Clear expired cache entries
const cacheCleared = await this.cacheManager.clearExpired();
if (cacheCleared > 0) {
actions.push(`Cleared ${cacheCleared} expired cache entries`);
}
// Optimize connection pool
const poolOptimized = await this.connectionPool.optimize();
if (poolOptimized) {
actions.push('Optimized connection pool');
}
// Trigger garbage collection if needed
const gcTriggered = this.triggerGarbageCollection();
if (gcTriggered) {
actions.push('Triggered garbage collection');
}
const endMemory = process.memoryUsage();
const memoryFreed = startMemory.heapUsed - endMemory.heapUsed;
this.emit('memoryOptimized', {
memoryFreed,
gcTriggered,
actions,
beforeMemory: startMemory,
afterMemory: endMemory
});
return {
memoryFreed,
gcTriggered,
optimizationActions: actions
};
}
catch (error) {
this.emit('memoryOptimizationError', { error });
throw error;
}
}
/**
* Real-time Performance Monitoring
*/
getCurrentMetrics() {
return {
requestsPerSecond: this.resourceMonitor.getRequestsPerSecond(),
averageResponseTime: this.resourceMonitor.getAverageResponseTime(),
memoryUsage: process.memoryUsage(),
cpuUsage: this.resourceMonitor.getCpuUsage(),
cacheHitRate: this.cacheManager.getHitRate(),
connectionPoolUtilization: this.connectionPool.getUtilization()
};
}
/**
* Automatic Performance Optimization
*/
async runAutoOptimization() {
if (this.isOptimizing) {
throw new Error('Optimization already in progress');
}
this.isOptimizing = true;
const startTime = performance.now();
const optimizations = [];
try {
const beforeMetrics = this.getCurrentMetrics();
// Memory optimization
const memoryResult = await this.optimizeMemoryUsage();
if (memoryResult.memoryFreed > 0) {
optimizations.push(`Memory: ${Math.round(memoryResult.memoryFreed / 1024 / 1024)}MB freed`);
}
// Cache optimization
const cacheOptimized = await this.cacheManager.optimize();
if (cacheOptimized) {
optimizations.push('Cache: Optimized cache structure');
}
// Connection pool optimization
const poolOptimized = await this.connectionPool.optimize();
if (poolOptimized) {
optimizations.push('Connections: Optimized pool configuration');
}
// Query optimization
const queryStatsImproved = await this.queryOptimizer.optimizeStats();
if (queryStatsImproved) {
optimizations.push('Queries: Updated optimization statistics');
}
const afterMetrics = this.getCurrentMetrics();
const performanceImprovement = this.calculatePerformanceImprovement(beforeMetrics, afterMetrics);
const duration = performance.now() - startTime;
this.emit('autoOptimizationCompleted', {
optimizations,
performanceImprovement,
duration,
beforeMetrics,
afterMetrics
});
return {
optimizationsApplied: optimizations,
performanceImprovement,
duration
};
}
catch (error) {
this.emit('autoOptimizationError', { error });
throw error;
}
finally {
this.isOptimizing = false;
}
}
// Private helper methods
setupAutoOptimization() {
// Run optimization every 5 minutes
setInterval(async () => {
try {
await this.runAutoOptimization();
}
catch (error) {
this.emit('autoOptimizationScheduledError', { error });
}
}, 5 * 60 * 1000);
}
initializePerformanceTracking() {
// Track performance metrics every second
setInterval(() => {
this.performanceMetrics = this.getCurrentMetrics();
this.emit('metricsUpdated', this.performanceMetrics);
}, 1000);
}
triggerGarbageCollection() {
try {
if (global.gc) {
global.gc();
return true;
}
return false;
}
catch (error) {
return false;
}
}
calculatePerformanceImprovement(before, after) {
const responseTimeImprovement = (before.averageResponseTime - after.averageResponseTime) / before.averageResponseTime;
const memoryImprovement = (before.memoryUsage.heapUsed - after.memoryUsage.heapUsed) / before.memoryUsage.heapUsed;
const cacheImprovement = (after.cacheHitRate - before.cacheHitRate) / 100;
return Math.round(((responseTimeImprovement + memoryImprovement + cacheImprovement) / 3) * 100);
}
}
// Supporting classes (simplified interfaces)
class ConnectionPool {
config;
size = 0;
activeCount = 0;
constructor(config) {
this.config = config;
}
async acquire() {
// Connection acquisition logic
return new DatabaseConnection();
}
async release(connection) {
// Connection release logic
}
async optimize() {
// Pool optimization logic
return true;
}
getUtilization() {
return this.activeCount / this.config.maxConnections;
}
}
class IntelligentCacheManager {
config;
size = 0;
memoryUsage = 0;
constructor(config) {
this.config = config;
}
async get(key) {
// Cache retrieval logic
return null;
}
async set(key, value, ttl) {
// Cache storage logic
}
async clearExpired() {
// Clear expired entries
return 0;
}
async optimize() {
// Cache optimization logic
return true;
}
getHitRate() {
// Calculate cache hit rate
return 0.95;
}
}
class ResourceMonitor {
config;
constructor(config) {
this.config = config;
}
start() {
// Start monitoring
}
getRequestsPerSecond() {
return 100;
}
getAverageResponseTime() {
return 50;
}
getCpuUsage() {
return 0.3;
}
}
class QueryOptimizer {
async optimize(query, params) {
// Query optimization logic
return {
optimizedQuery: query,
optimizedParams: params,
estimatedPerformance: {
executionTime: 10,
memoryUsage: 1024,
cacheability: 0.8
}
};
}
async optimizeStats() {
// Update query statistics
return true;
}
}
class DatabaseConnection {
}
export { PerformanceOptimizationManager };
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