Create: 2024-10-25 Update: 2025-07-10 14:53:15

❓ В чем разница между балансировщиком нагрузки и API-шлюзом?

1️⃣ NLB (Network Load Balancer) обычно разворачивается перед API-шлюзом и отвечает за маршрутизацию трафика на основе IP-адресов. Он не анализирует HTTP-запросы

2️⃣ ALB (Application Load Balancer) маршрутизирует запросы на основе HTTP-заголовков или URL, предоставляя более сложные правила маршрутизации. Выбор балансировщика нагрузки зависит от требований к маршрутизации. Для простых сервисов с меньшим масштабом достаточно одного балансировщика

3️⃣ API-шлюз работает на уровне приложения и решает задачи, отличные от тех, которые выполняет балансировщик нагрузки

💡 На схеме выше показаны подробности. Чаще всего они используются в комбинации для обеспечения масштабируемой и безопасной архитектуры современных веб-приложений.

🌟 Вариант A: ALB используется для распределения запросов между различными сервисами. Поскольку сервисы сами реализуют ограничение скорости, аутентификацию и т.д., такой подход более гибкий, но требует больше работы на уровне сервиса

🌟 Вариант B: API-шлюз берёт на себя задачи по аутентификации, ограничению скорости, кэшированию и другим функциям, что снижает нагрузку на уровне сервисов. Однако этот вариант менее гибкий по сравнению с использованием ALB

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❓ В чем разница между балансировщиком нагрузки и API-шлюзом?

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