The Full Stack Web Development - Working With Lists & Hashes

The video tutorial covers two important data types in Redis: lists and hashes. It begins with an introduction to lists, explaining how they are ordered collections of strings and demonstrating commands like L push, R push, L range, L pop, and L insert. The tutorial then transitions to hashes, which are maps between string fields and values, and covers commands such as H set, H get, HM set, HM get, H get all, H del, and H len. The video provides practical examples and explanations for each command, helping viewers understand how to manipulate data in Redis effectively.

What is the primary characteristic of a list in Redis?

• It is a set of unordered elements.

• It is sorted by the order of insertion.

• It is a collection of unique elements.

• It is a map of key-value pairs.

Which command is used to insert an element at the head of a list in Redis?

• R push

• R pop

• L pop

• L push

How can you remove an element from the right end of a list in Redis?

• R pop

• R push

• L push

• L pop

What is a hash in Redis primarily used for?

• Storing a list of strings

• Mapping string fields to string values

• Storing unique elements

• Sorting elements

Which command is used to set multiple fields in a hash at once?

• H set

• HM set

• H get

• H del

How can you increment a numeric field in a Redis hash?

• H del

• H get

• H incrby

• H set

Which command retrieves all keys from a hash in Redis?

• H vals

• H keys

• H len

• H get