Overview of Blocking vs Non-Blocking

In Bnlang, operations can be blocking or non-blocking.

• Blocking means the program waits until the operation finishes before moving on.
• Non-blocking means the program continues running other tasks while the operation works in the background.

Understanding this difference is key to writing efficient and responsive programs.

Blocking Example

// ব্লকিং ফাংশনের উদাহরণ
function ঘুমাও(ms) {
  const শেষ = Date.now() + ms;
  যতক্ষণ (Date.now() < শেষ) {}
}

কনসোল.লগ("শুরু");
ঘুমাও(2000); // ২ সেকেন্ড ব্লক করে
কনসোল.লগ("শেষ");

Non-Blocking Example

কনসোল.লগ("শুরু");

সময়সীমা_নির্ধারণ(() => {
  কনসোল.লগ("টাইমআউটের ভেতরে");
}, 2000);

কনসোল.লগ("শেষ"); // সাথে সাথে প্রিন্ট হয়

Why Non-Blocking is Better

• Keeps programs responsive.
• Multiple tasks can progress together.
• Better for I/O operations like file read, network requests, and database queries.

Best Practices

• Avoid blocking operations in the main thread.
• Use asynchronous APIs for I/O tasks.
• Break heavy computations into smaller chunks or move them to workers.