Job options (delay, attempts, priority) in NestJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a delay of 5000 milliseconds to the job.

NestJS

this.queue.add('sendEmail', data, { delay: [1] });

Drag options to blanks, or click blank then click option'

A5

B5000

C500

D50

Attempts:

3 left

💡 Hint

Common Mistakes

Using 5 instead of 5000, which means 5 milliseconds, too short.

Using 500 which is 0.5 seconds, not 5 seconds.

The delay option expects the delay time in milliseconds. 5000 means 5 seconds delay before the job runs.

2fill in blank

medium

Complete the code to set the job to retry 3 times on failure.

NestJS

this.queue.add('processData', data, { attempts: [1] });

Drag options to blanks, or click blank then click option'

A3

B5

C1

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Setting attempts to 0 which disables retries.

Setting attempts to 1 which means only one try, no retries.

The attempts option sets how many times the job will retry if it fails. Setting it to 3 means it will try up to 3 times.

3fill in blank

hard

Fix the error in setting the job priority to high (1 is highest).

NestJS

this.queue.add('generateReport', data, { priority: [1] });

Drag options to blanks, or click blank then click option'

A1

B5

C10

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 which is invalid priority.

Using 10 which is low priority.

In NestJS job queues, lower numbers mean higher priority. 1 is the highest priority, so use 1.

4fill in blank

hard

Fill both blanks to add a job with 2 attempts and 3 seconds delay.

NestJS

this.queue.add('cleanup', data, { attempts: [1], delay: [2] });

Drag options to blanks, or click blank then click option'

A2

B3

C3000

D2000

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing delay units and using 3 instead of 3000.

Setting attempts to 3 instead of 2.

Set attempts to 2 for two retries, and delay to 3000 for 3 seconds delay (3000 milliseconds).

5fill in blank

hard

Fill all three blanks to add a job with high priority (1), 4 attempts, and 1 second delay.

NestJS

this.queue.add('syncData', data, { priority: [1], attempts: [2], delay: [3] });

Drag options to blanks, or click blank then click option'

A1

B4

C1000

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using 5 for priority which is low priority.

Using 1 for attempts which means only one try.

Using 1 for delay which is 1 millisecond, not 1 second.

Priority 1 is highest, attempts 4 means 4 retries, and delay 1000 means 1 second delay.