# Log Management support for recovery in mobile computing Environment

## TL;DR

This paper proposes a new log management scheme for mobile transaction recovery that optimizes checkpoint intervals to balance recovery effectiveness and management costs in wireless environments.

## Contribution

It introduces a novel log management approach tailored for mobile transactions, analyzing model parameters and comparing with existing schemes to optimize recovery performance.

## Key findings

- Identifies optimal checkpoint interval for best ROI.
- Demonstrates improved failure recoverability over existing schemes.
- Provides a trade-off analysis between log management costs and recovery benefits.

## Abstract

Rapid and innovative improvement in wireless communication technologies has led to an increase in the demand for mobile internet transactions. However, internet access from mobile devices is very expensive due to limited bandwidth available on wireless links and high mobility rate of mobile hosts. When a user executes a transaction with a web portal from a mobile device, the disconnection necessitates failure of the transaction or redoing all the steps after reconnection, to get back into consistent application state. Thus considering challenges in wireless mobile networks, a new log management scheme is proposed for recovery of mobile transactions. In this proposed approach, the model parameters that affect application state recovery are analyzed. The proposed scheme is compared with the existing Lazy and Pessimistic scheme and a trade off analysis between the cost invested to manage log and the return of investment in terms of improved failure recoverability is made. From the analysis, the best checkpoint interval period that yields the best return of investment is identified.

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Source: https://tomesphere.com/paper/0908.0076