eräkäsittelyä

Eräkäsittelyä, often translated as batch processing, is a method of data processing where a group of records or transactions, known as a batch, are collected and processed together at a later time. This contrasts with real-time processing, where data is processed as soon as it is received.

In batch processing, data is accumulated over a period, such as an hour, a day, or even a week. Once the batch is complete, it is fed into a system for processing. This allows for efficient handling of large volumes of data that do not require immediate attention. Common examples include payroll processing, end-of-day sales reporting, and utility bill generation.

The advantages of batch processing include improved system efficiency, as processing can be scheduled during off-peak hours, reducing the load on the system during busy periods. It is also cost-effective for handling large datasets and can be simpler to implement and manage compared to real-time systems. However, a significant disadvantage is the inherent delay in data availability and the absence of immediate feedback, which can be critical in certain applications.

Batch processing systems typically involve stages of data input, processing, and output. Data is first collected and validated, then processed according to predefined rules, and finally, the results are generated and distributed. This structured approach ensures that large volumes of work can be completed systematically and without interruption.