Design Patterns MCP Server

{ "id": "backpressure", "name": "Backpressure Pattern", "category": "Reactive", "description": "Handles situations where data producers are faster than consumers", "when_to_use": "High-throughput systems\nStream processing\nRate limiting", "benefits": "System stability\nResource protection\nFlow control\nPerformance", "drawbacks": "Implementation complexity\nBuffering overhead\nLatency", "use_cases": "Stream processing\nMessage queues\nData pipelines", "complexity": "High", "tags": [ "backpressure", "flow-control", "performance" ], "examples": { "typescript": { "language": "typescript", "code": "// Backpressure: handle fast producer, slow consumer\nclass BackpressureObservable<T> {\n constructor(\n private source: Observable<T>,\n private strategy: 'buffer' | 'drop' | 'latest'\n ) {}\n \n subscribe(observer: Observer<T>): Subscription {\n const buffer: T[] = [];\n let processing = false;\n \n const processNext = async () => {\n if (processing || buffer.length === 0) return;\n \n processing = true;\n const value = buffer.shift()!;\n \n try {\n await observer.next(value);\n } finally {\n processing = false;\n processNext();\n }\n };\n \n return this.source.subscribe({\n next: value => {\n if (this.strategy === 'buffer') {\n buffer.push(value);\n } else if (this.strategy === 'drop' && !processing) {\n buffer.push(value);\n } else if (this.strategy === 'latest') {\n buffer.length = 0;\n buffer.push(value);\n }\n processNext();\n },\n error: err => observer.error(err),\n complete: () => observer.complete()\n });\n }\n}\n\n// Usage: Fast data producer, slow processor\nconst fastProducer = interval(10); // Every 10ms\nconst slowConsumer = new BackpressureObservable(fastProducer, 'drop');\n\nslowConsumer.subscribe({\n next: async value => {\n await slowOperation(value); // Takes 100ms\n },\n error: () => {},\n complete: () => {}\n});" } } }