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Update README.md 

fix typos/grammar related to load balancers
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lemonez 2021-08-18 22:48:56 -07:00 committed by GitHub
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@ -696,9 +696,9 @@ Layer 4 load balancers look at info at the [transport layer](#communication) to
### Layer 7 load balancing ### Layer 7 load balancing
Layer 7 load balancers look at the [application layer](#communication) to decide how to distribute requests. This can involve contents of the header, message, and cookies. Layer 7 load balancers terminate network traffic, reads the message, makes a load-balancing decision, then opens a connection to the selected server. For example, a layer 7 load balancer can direct video traffic to servers that host videos while directing more sensitive user billing traffic to security-hardened servers. Layer 7 load balancers look at the [application layer](#communication) to decide how to distribute requests. This can involve contents of the header, message, and cookies. Layer 7 load balancers terminate network traffic, read the message, make a load-balancing decision, then open a connection to the selected server. For example, a layer 7 load balancer can direct video traffic to servers that host videos while directing more sensitive user billing traffic to security-hardened servers.
At the cost of flexibility, layer 4 load balancing requires less time and computing resources than Layer 7, although the performance impact can be minimal on modern commodity hardware. At the cost of flexibility, layer 4 load balancing requires less time and computing resources than layer 7, although the performance impact can be minimal on modern commodity hardware.
### Horizontal scaling ### Horizontal scaling