Feature Comparison

n the dynamic landscape of cloud computing, Load Balancers are essential tools for enhancing application performance and ensuring a seamless user experience. At VNG Cloud, we offer two primary types of Load Balancers: Application Load Balancers (ALBs) and Network Load Balancers (NLBs). This document will help users understand the differences and strengths of these Load Balancer types, enabling them to make informed decisions about which one best suits the requirements of their specific applications.

Attribute/Feature	Application Load Balancer	Network Load Balancer
Layer	Layer 7	Layer 4
Scheme	Internet-facing, Internal	Internet-facing, Internal
Deployment Mode	Active/StandBy	Active/StandBy
IAM Permission	Full IAM Support	Full IAM Support
Listener Configurations
Protocol	HTTP, HTTPS	TCP, UDP
Host & Path Routing	Yes	No
HTTP Header-Based Routing	No	No
Server Name Indication (SNI)	Yes	No
Enable Client CA (HTTPS Only)	Yes	No
Timeout	Yes	Yes
Whitelist IP Source	Yes	Yes
Pool Configurations
Algorithm	Round Robin, Least Connections, Source IP	Round Robin, Least Connections, Source IP
Pool Protocol	HTTP	TCP, Proxy, UDP
Enable Sticky Session	Yes	No
Enable TLS encryption	Yes	No
Health Check	TCP, HTTP	TCP, HTTP, HTTPS, Ping&UDP
Target type	IP, Instance	IP, Instance
vMonitor-platform Integration
Metric	Yes	Yes
Audit Log	Yes	Yes
Access Log	Yes	Yes