{"id":10290,"date":"2023-05-02T11:30:40","date_gmt":"2023-05-02T11:30:40","guid":{"rendered":"https:\/\/www.scmgalaxy.com\/tutorials\/?p=10290"},"modified":"2023-06-19T13:29:42","modified_gmt":"2023-06-19T13:29:42","slug":"top-50-redis-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-redis-interview-questions-with-answers\/","title":{"rendered":"Top 50 Redis Interview Questions with Answers"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-58.png\" alt=\"\" class=\"wp-image-10292\" width=\"672\" height=\"336\" srcset=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-58.png 600w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-58-300x150.png 300w\" sizes=\"auto, (max-width: 672px) 100vw, 672px\" \/><figcaption class=\"wp-element-caption\"><strong><em>Redis Interview Questions with Answers<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li>What is Redis?<br>a) A relational database<br>b) A NoSQL database<br>c) A graph database<br>d) A document database<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>What is the data structure used by Redis?<br>a) JSON<br>b) XML<br>c) Key-Value<br>d) Relational<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>What is the maximum size of the key in Redis?<br>a) 256 MB<br>b) 512 MB<br>c) 1 GB<br>d) 2 GB<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>What is the maximum number of Redis databases that can be created?<br>a) 15<br>b) 16<br>c) 18<br>d) 20<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>Which command is used to get the value of a key in Redis?<br>a) Get<br>b) Set<br>c) Mget<br>d) Hget<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"6\">\n<li>Which command is used to set the value of a key in Redis?<br>a) Get<br>b) Set<br>c) Mget<br>d) Hget<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"7\">\n<li>Which data structure is used to store sorted data in Redis?<br>a) Set<br>b) List<br>c) Hash<br>d) Sorted Set<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"8\">\n<li>Which Redis data structure is similar to a Dictionary in Python?<br>a) Set<br>b) List<br>c) Hash<br>d) Sorted Set<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"9\">\n<li>Which command is used to add an element to a Set in Redis?<br>a) Add<br>b) Set<br>c) Sadd<br>d) Sset<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"10\">\n<li>Which command is used to remove an element from a Set in Redis?<br>a) Remove<br>b) Del<br>c) Srem<br>d) Hrem<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"11\">\n<li>Which command is used to get the length of a List in Redis?<br>a) Length<br>b) Count<br>c) Len<br>d) Llen<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"12\">\n<li>Which command is used to add an element to the beginning of a List in Redis?<br>a) Lpush<br>b) Rpush<br>c) Lpop<br>d) Rpop<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"13\">\n<li>Which command is used to add an element to the end of a List in Redis?<br>a) Lpush<br>b) Rpush<br>c) Lpop<br>d) Rpop<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"14\">\n<li>Which Redis data structure is similar to a stack in programming?<br>a) Set<br>b) List<br>c) Hash<br>d) Sorted Set<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"15\">\n<li>Which Redis data structure is similar to a queue in programming?<br>a) Set<br>b) List<br>c) Hash<br>d) Sorted Set<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"16\">\n<li>Which data structure is used to store a value with an expiration time in Redis?<br>a) Set<br>b) List<br>c) Hash<br>d) Sorted Set<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"17\">\n<li>Which command is used to set the expiration time of a key in Redis?<br>a) Expire<br>b) SetEx<br>c) Pexpire<br>d) PsetEx<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"18\">\n<li>Which command is used to remove the expiration time of a key in Redis?<br>a) Expire<br>b) Persist<br>c) Pexpire<br>d) Ppersist<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"19\">\n<li>Which command is used to get the remaining time for a key with an expiration time in Redis?<br>a) Ttl<br>b) Ltt<br>c) Pttl<br>d) Pltt<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"20\">\n<li>Which command is used to increment a value in Redis by a certain amount?<br>a) Incr<br>b) IncrBy<br>c) Decr<br>d) DecrBy<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"21\">\n<li>Which command is used to get the value of multiple keys in Redis?<br>a) Get<br>b) Mget<br>c) Hget<br>d) Smget<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"22\">\n<li>Which command is used to set the value of multiple keys in Redis?<br>a) Set<br>b) Mset<br>c) Hset<br>d) Smset<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"23\">\n<li>Which command is used to check if a key exists in Redis?<br>a) Exists<br>b) Check<br>c) KeyExists<br>d) KeyCheck<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"24\">\n<li>Which command is used to get all the keys in Redis?<br>a) Keys<br>b) AllKeys<br>c) GetKeys<br>d) ListKeys<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"25\">\n<li>Which command is used to delete a key in Redis?<br>a) Delete<br>b) Remove<br>c) Del<br>d) Rem<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"26\">\n<li>Which command is used to delete multiple keys in Redis?<br>a) Delete<br>b) Remove<br>c) Del<br>d) Mdel<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"27\">\n<li>Which command is used to get the size of a Set in Redis?<br>a) Length<br>b) Count<br>c) Size<br>d) Scard<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"28\">\n<li>Which command is used to get the members of a Set in Redis?<br>a) Members<br>b) GetMembers<br>c) Smembers<br>d) SetMembers<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"29\">\n<li>Which command is used to check if an element exists in a Set in Redis?<br>a) Exists<br>b) Check<br>c) Sexists<br>d) SetExists<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"30\">\n<li>Which command is used to get the intersection of two Sets in Redis?<br>a) Intersect<br>b) Sinter<br>c) Union<br>d) Sunion<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"31\">\n<li>Which command is used to get the union of two Sets in Redis?<br>a) Intersect<br>b) Sinter<br>c) Union<br>d) Sunion<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"32\">\n<li>Which command is used to get the difference of two Sets in Redis?<br>a) Diff<br>b) Sdiff<br>c) SDiffStore<br>d) SetDiff<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"33\">\n<li>Which command is used to move an element from one Set to another in Redis?<br>a) Move<br>b) Transfer<br>c) Smove<br>d) Stransfer<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"34\">\n<li>Which command is used to add an element to a Sorted Set in Redis?<br>a) Add<br>b) Set<br>c) Zadd<br>d) Zset<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"35\">\n<li>Which command is used to remove an element from a Sorted Set in Redis?<br>a) Remove<br>b) Del<br>c) Zrem<br>d) Zdel<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"36\">\n<li>Which command is used to get the range of elements in a Sorted Set in Redis?<br>a) Range<br>b) GetRange<br>c) Zrange<br>d) SetRange<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"37\">\n<li>Which command is used to get the rank of an element in a Sorted Set in Redis?<br>a) Rank<br>b) GetRank<br>c) Zrank<br>d) SetRank<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"38\">\n<li>Which command is used to get the score of an element in a Sorted Set in Redis?<br>a) Score<br>b) GetScore<br>c) Zscore<br>d) SetScore<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"39\">\n<li>Which command is used to increment the score of an element in a Sorted Set in Redis?<br>a) Incr<br>b) IncrBy<br>c) Zincr<br>d) ZincrBy<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"40\">\n<li>Which command is used to get the size of a Sorted Set in Redis?<br>a) Length<br>b) Count<br>c) Size<br>d) Zcard<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"41\">\n<li>Which command is used to get the members of a Sorted Set in Redis?<br>a) Members<br>b) GetMembers<br>c) Zmembers<br>d) SortedMembers<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"42\">\n<li>Which command is used to get all the values in Redis?<br>a) Values<br>b) AllValues<br>c) GetValues<br>d) ListValues<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"43\">\n<li>Which command is used to get the random key in Redis?<br>a) Random<br>b) GetRandom<br>c) KeyRandom<br>d) RandomKey<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"44\">\n<li>Which command is used to get the random element from a Set in Redis?<br>a) Random<br>b) GetRandom<br>c) Srandom<br>d) Srandmember<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"45\">\n<li>Which command is used to get the random element from a Sorted Set in Redis?<br>a) Random<br>b) GetRandom<br>c) Zrandom<br>d) Zrandmember<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"46\">\n<li>Which command is used to flush all the data in Redis?<br>a) FlushAll<br>b) Flush<br>c) Clear<br>d) Truncate<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"47\">\n<li>Which command is used to backup Redis data?<br>a) Backup<br>b) Save<br>c) Export<br>d) Dump<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"48\">\n<li>Which command is used to restore Redis data?<br>a) Restore<br>b) Load<br>c) Import<br>d) Recover<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"49\">\n<li>Which command is used to check the Redis server status?<br>a) Status<br>b) CheckServer<br>c) Ping<br>d) Health<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"50\">\n<li>Which command is used to shutdown the Redis server?<br>a) Shutdown<br>b) Stop<br>c) End<br>d) Quit<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Answer: b Answer: c Answer: b Answer: b Answer: a Answer: b Answer: d Answer: c Answer: c Answer: c [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10290","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Redis Interview Questions with Answers - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-redis-interview-questions-with-answers\/\" \/>\n<meta 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