WebDec 13, 2016 · 5 Answers Sorted by: 12 You can use the SCAN command to get all keys from Redis. Then for each key, use the TYPE command to check if it's a hash. … WebStreams are an append-only data structure. The fundamental write command, called XADD, appends a new entry to the specified stream. Each stream entry consists of one or more field-value pairs, somewhat like a record or a Redis hash: > XADD mystream * sensor-id 1234 temperature 19.8 1518951480106-0.

Redis - Hash Hexists Command - Tutorialspoint

WebI want to check if the redis cache is empty (no data) then trigger a web job which will populate the redis cache tables data from sql database. ... If it is a string use get (or exists). If it is a hash then query for the specific members you need. Another advantage of doing it this way is to avoid having a scheduled job doing it. Instead have ... dna test when baby is born

Redis modules API Redis

WebRedis Hashes are maps between the string fields and the string values. Hence, they are the perfect data type to represent objects. In Redis, every hash can store up to more than 4 billion field-value pairs. Example 2 Answers Sorted by: 8 Try this command, it will solve your problem. redis> EXISTS test (integer) 1 Share Follow answered Mar 7, 2015 at 15:51 VelS 96 3 Add a comment 0 You could use HLEN, if that returns zero then they hash does not exist. redis> HLEN test (integer) 3 redis> HLEN non_existent_hash_key (integer) 0 Share Follow WebTTL. Returns the remaining time to live of a key that has a timeout. This introspection capability allows a Redis client to check how many seconds a given key will continue to be part of the dataset. In Redis 2.6 or older the command returns -1 if the key does not exist or if the key exist but has no associated expire. create a hotmail email address for free