Limited Parallel Execution
Explore the concept of limited parallel execution in Node.js to control the number of concurrent asynchronous tasks. Understand how to prevent resource overload and build more resilient applications by balancing parallelism with concurrency limits.
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Spawning parallel tasks without control can often lead to excessive load. Imagine having thousands of files to read, URLs to access, or database queries to run in parallel. A common problem in such situations is running out of resources. The most common example is when an application tries to open too many files at once, utilizing all the file descriptors available to the process.
A server that spawns unbounded parallel tasks to handle a user request could be exploited with a denial-of-service (DoS) attack. That’s when a malicious actor can forge one or ...