High Availability Payment Processing Case Study

This case study details the high availability (HA) solution implemented by Payliance, a provider of real-time payment processing services. The document outlines the business challenge faced by Payliance, which includes the need for 24x7 uptime to meet the demands of the payments industry and comply with financial industry requirements. It describes the integration of DRBD, Pacemaker, and Corosync technologies to ensure HA across different Availability Zones within an AWS Region. The solution allows for data replication and application management, ensuring that services remain operational even during maintenance windows. The case study also emphasizes the flexibility and accessibility of data, as Payliance can utilize LINBIT solutions independently or in conjunction with other platforms. The successful implementation of this HA solution has been proven effective over many years in various production systems worldwide, highlighting its reliability and cost-effectiveness on Linux platforms.