March 2025
Intermediate to advanced
612 pages
19h 42m
Portuguese (Portugal, Brazil)
Content preview from Design de sistemas na AWS
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Capítulo 5. Abordagens e técnicas de balanceamento de carga
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Na busca pela escalabilidade e para garantir a disponibilidade ininterrupta dos serviços, as organizações adotaram técnicas de escalonamento horizontal e vertical, conforme discutido no Capítulo 1. Estes métodos resolveram alguns dos desafios de escalabilidade, mas não garantem a disponibilidade contínua dos serviços. O rápido crescimento da Internet e a necessidade de os sítios Web modernos de elevado tráfego lidarem com centenas de milhares de pedidos simultâneos exigem uma abordagem mais robusta.
Quando um único servidor é responsável pelo tratamento de todos os pedidos de entrada, fica sobrecarregado, o que pode levar a falhas no sistema. Para ultrapassar esta limitação, escalamos horizontalmente o sistema. Então, o balanceamento de carga entra em ação para distribuir eficientemente o tráfego de rede de entrada pelo grupo de servidores de back-end, muitas vezes referido como um pool de servidores. É como começar uma empresa por conta própria e, mais tarde, contratar mais pessoas (e distribuir as tarefas entre elas) para escalar o negócio.
Neste capítulo, começaremos com a compreensão de diferentes componentes de rede para gerenciar o tráfego e melhorar o desempenho. Em seguida, vamos nos concentrar no conceito de balanceadores de carga (LBs), que desempenham um papel crucial na obtenção de uma distribuição ...
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