XREADGROUP for consumer groups in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to read messages from a Redis stream using XREADGROUP.

Redis

XREADGROUP GROUP mygroup consumer1 COUNT [1] STREAMS mystream >

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

A10

B5

C0

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 for COUNT returns no messages.

Omitting COUNT may return too many messages.

The COUNT option limits the number of messages returned. Here, 10 messages are requested.

2fill in blank

medium

Complete the code to specify the consumer group name in XREADGROUP.

Redis

XREADGROUP GROUP [1] consumer1 COUNT 5 STREAMS mystream >

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

Agroup1

Bconsumer1

Cmygroup

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Using the consumer name instead of the group name.

Using a group name that does not exist.

The GROUP option requires the exact consumer group name. Here, 'mygroup' is correct.

3fill in blank

hard

Fix the error in the XREADGROUP command to read pending messages for a consumer.

Redis

XREADGROUP GROUP mygroup [1] COUNT 5 STREAMS mystream 0

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

A0

Bconsumer1

Cmygroup

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using the group name twice.

Using '>' instead of '0' to read pending messages.

The second argument after GROUP is the consumer name. 'consumer1' is correct here.

4fill in blank

hard

Fill both blanks to read new messages for a consumer group from a stream.

Redis

XREADGROUP GROUP [1] [2] COUNT 10 STREAMS mystream >

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

Amygroup

Bconsumer1

Cgroup1

Dconsumer2

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping group and consumer names.

Using wrong group or consumer names.

The GROUP name is 'mygroup' and the consumer name is 'consumer1' to read new messages.

5fill in blank

hard

Fill all three blanks to read pending messages for a specific consumer in a group.

Redis

XREADGROUP GROUP [1] [2] COUNT 5 STREAMS mystream [3]

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

Amygroup

Bconsumer2

C0

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '0' to read pending messages.

Using wrong consumer or group names.

To read pending messages, use the group name 'mygroup', consumer 'consumer2', and ID '0'.