Node.js · Theory

StatsD

Theory

438/723

StatsD

StatsD is a Node.js topic. In plain words you use it for a short StatsD example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest StatsD example you can type. Type it, run it, and say what you see. If you can do that from memory, you know StatsD.

From the example next to this theory — StatsD: find user 2, then list names.

Trap — only saying “StatsD” with no example. Fix that before you talk about advanced Node.js.

Viva — what is StatsD? Then show the smallest StatsD example you can type. Then name the trap.

Exam tip

What is StatsD? Show this: the smallest StatsD example you can type. Trap: only saying “StatsD” with no example.

Example

// StatsD
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

StatsD: find user 2, then list names. Say both prints.

Short notes

DefStatsD — a short StatsD example in a script or API on localhost.
Rulethe smallest StatsD example you can type
Traponly saying “StatsD” with no example
Usea script or API on localhost

Node.js · Theory

StatsD

← All stacks

Theory

438/723

StatsD

StatsD is a Node.js topic. In plain words you use it for a short StatsD example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest StatsD example you can type. Type it, run it, and say what you see. If you can do that from memory, you know StatsD.

From the example next to this theory — StatsD: find user 2, then list names.

Trap — only saying “StatsD” with no example. Fix that before you talk about advanced Node.js.

Viva — what is StatsD? Then show the smallest StatsD example you can type. Then name the trap.

Exam tip

What is StatsD? Show this: the smallest StatsD example you can type. Trap: only saying “StatsD” with no example.

Example

// StatsD
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

StatsD: find user 2, then list names. Say both prints.

Short notes

DefStatsD — a short StatsD example in a script or API on localhost.
Rulethe smallest StatsD example you can type
Traponly saying “StatsD” with no example
Usea script or API on localhost

StatsD

Example

Short notes

Questions

StatsD

Example

Short notes

Questions