Nov 21, 2020
Can’t forget about your tiny classmate. In a Class of Her Own
seen from United States
seen from South Korea
seen from Germany
seen from Australia
seen from Poland
seen from China
seen from Spain
seen from Russia
seen from Spain
seen from Saudi Arabia
seen from Saudi Arabia
seen from United States
seen from United Kingdom
seen from Malaysia
seen from South Africa
seen from United States
seen from Austria
seen from Chile
seen from China
seen from United States
Can’t forget about your tiny classmate. In a Class of Her Own
In a Class of Her Own
In a Class of Her Own
Looking for best school management system? Brightsword provides online school management system in Singapore with excellent features like admissions, leave calendar..
Our School Management System is designed especially for schools to manage challenges in a single unified solution. It is a 100% web based solution, with a proven record of increased productivity and efficiency. It is reliable and affordable. We customise our system to meet the specific requirements of our client. Designed to be user friendly, our system enhances the school’s ability to monitor and analyse data related to students, staff, parents and other day to day administrations.
Load Balancer 101
This blog is part of Cloud School series of blogs
Load balancers are quite common in architectural designs. Load balancers are primarily used for spreading requests across a pool of servers. They are also called reverse proxies. Note that they are different from forward proxy (like squid). Forward proxy sits close to the client and reverse proxy sits close to the server.
Load balancers have the following features
Persistence - Load balancers can maintain session persistence which allows the requests from same session to go to the same backend server.
Health Checks - Load balancers can periodically check health (and adjust weights) of the backend servers. This ensures that service remains up even when a few backend servers are down.
Metrics - Since all the requests and responses pass through load balancers, they are often used for collecting the service metrics
SSL offloading - Load balancers often terminate HTTPS/SSL and store client facing certificates. Connection from load balancer to backend can be encrypted again often using a low CPU intensive cipher like AES-128.
Request Queuing - An often overlooked but great feature of load balancer is to queue the requests instead of overload the backend servers. This improves the service response time and can handle small traffic spikes without affecting service health.
DOS protection - Load balancers can maintain metrics on requests per ip per min etc and can throttle/deny abusers.
Maintenance page - Load balancers can direct traffic to a backup pool or show maintenance page when backend pool is not available.