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Write-back cache

Write-back cache

Write-back cache definition

From the fundamental point of view, “Write-back cache” is not a cybersecurity term but more of a concept or method in computer storage and data management. It operates as a cache mechanism in storage systems. For example, it writes data to cache storage files instead of a primary medium, like hard drives or any other solid-state drives. That way writing performance can be improved and significant delays avoided. Write-back cache impacts cybersecurity by working in line with the performance of storage systems that store and protect critical data. It is advisable to optimize and configure write-back cache systems according to cybersecurity standards.

See also: cache miss

Common write-back cache applications in cybersecurity:

  • Faster data access and security scanning: While improving the overall performance of storage systems, the write-back cache can benefit security scanning processes, like antivirus scans and intrusion detection systems, that need to access and scan large amounts of information in a short period without shutting down the systems.
  • Reducing downtime during backup and recovery: Some storage systems with write-back cache can improve data backup and recovery processes. For example, during a security incident or data breach, fast recovery time is crucial to minimize delay and downtime for business to continue.
  • Accelerating log and event processing: More and more event management (SIEM) and security information systems rely on flexible and efficient data storage and retrieval. Here comes the write-back cache into play. The write-back cache accelerates the processing of security events and logs by ensuring that security teams have time to access critical information for threat detection, analysis, and response.

Further reading

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