The authors present an effective design for real-time detection andrecovery in fault-tolerant computing systems in order to improve systemreliability. To reduce degradation of system performance andreliability, they propose a real-time recovery scheme that provideseffective fault containment for data errors in cache memories. Thescheme is simple to implement and is tailored for TMR redundantprocessor systems using hardware voters. A broadcasting protocol hasbeen developed for real-time restorations of erroneous cache data forredundant TMR processor systems using hardware voting. Its performanceoverhead is to broadcast only 2 to 3 percent of the total memory. Thisconcise paper presents a low-cost and effective real-time errordetection and recovery mechanism. I strongly recommend it tosoftware engineers involved in highly reliable real-timeapplications.