Recursive Restartability: Turning the Reboot Sledgehammer into a Scalpel

A Scalpel , not a Sledgehammer

Designing for High Availability and Measurability

We propose a structuring model, called recursive restartability, aimed at controlling the amount of endto-end unavailability and improving the measurability of software infrastructures with high availability requirements. Recursive restartability exploits the benefits of restarts at various levels within complex software systems and relies on an execution infrastructure to monitor, cure, and re...

Reducing Recovery Time in a Small Recursively Restartable System

We present ideas on how to structure software systems for high availability by considering MTTR/MTTF characteristics of components in addition to the traditional criteria, such as functionality or state sharing. Recursive restartability (RR), a recently proposed technique for achieving high availability, exploits partial restarts at various levels within complex software infrastructures to reco...

Fault tolerant system with imperfect coverage, reboot and server vacation

This study is concerned with the performance modeling of a fault tolerant system consisting of operating units supported by a combination of warm and cold spares. The on-line as well as warm standby units are subject to failures and are send for the repair to a repair facility having single repairman which is prone to failure. If the failed unit is not detected, the system enters into an unsafe...

Comparing the complication of electrocautery and scalpel methods in surgical incisions of hysterectomy surgery

Aims: Surgical incisions have been performed by a scalpel for many years, and today the use of an alternative method, catheter incision, is increasing daily. This study aimed to evaluate the complications of use of electrocautery and scalpel in surgical incisions of the abdominal wall in hysterectomy surgery Materials and Methods: The present study is single-blind that was performed on 92 elig...