Dzone iconDzoneSep 3, 2026

The Bottleneck of Scaling

Any input/output operation, be it accessing a file, handling an HTTP request, or a database connection, is based on 3 fundamental system concepts — file descriptors, kernel memory, and heap size. This article discusses how modern languages help developers handle behind-the-scenes file descriptor, kernel memory, and heap management.

The Bottleneck of Scaling

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Any input/output operation, be it accessing a file, handling an HTTP request, or a database connection, is based on 3 fundamental system concepts — file descriptors, kernel memory, and heap size.

This article discusses how modern languages help developers handle behind-the-scenes file descriptor, kernel memory, and heap management.

These three concepts are major bottlenecks for scaling.

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Any input/output operation, be it accessing a file, handling an HTTP request, or a database connection, is based on 3 fundamental system concepts — file descriptors, kernel memory, and heap size. This article discusses how modern languages help developers handle behind-the-scenes file descriptor, kernel memory, and heap management. These three concepts are major bottlenecks for scaling.

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These three concepts are major bottlenecks for scaling.

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