Redis Custom DataStructure

Question

Data Field as

  typedef struct Info
  {
     std::string Name;
     std::string Address;
     ...
     So on
  };

and Want to store data in Redis Here. there may a instance when some of the field of structure can repeat. How can i make above struct in Redis and store. There is one condition. if data of same value exist. don't overwrite. add new row.

Like this but it's in Programming Language

 std::list<Info> infoList_;

And able to search also;

What do you mean by 'some of the field of structure can repeat'? And you want to search it in what way? — Mobility
– Mobility, Commented Jan 23, 2018 at 9:01
lets say there is field of state in Info. For multiple people the value can be same. and I want to search people of age of 24. Like this. [searching of data is not important ]. — Nespl NS3
– Nespl NS3, Commented Jan 23, 2018 at 9:16

Guillaume S · Accepted Answer · 2018-01-23 09:39:12Z

1

Redis don't provide a data structure that can store a list of complex object structure.

But you can maybe use a redis module like :

rejson : A native JSON data type for Redis : http://redismodules.com/modules/rejson/
redissearch : High performance full text search engine : http://redismodules.com/modules/redisearch/

Both modules can store complex data structure.

answered Jan 23, 2018 at 9:39

Guillaume S

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6 Comments

Nespl NS3 Over a year ago

Lets say if I have entry in Redis Like this. these are Keys ABC:22:1, ` ABC:22.2, ABC:22:3. can i somehow access them with ABC:22:*` or "ABC:". Yes then Please

Nespl NS3 Over a year ago

I got it.. SCAN 0 MATCH *ABC:*` COUNT 1000

Nespl NS3 Over a year ago

Next i want to know, how to get number of keys of matching pattern

Guillaume S Over a year ago

You can't do this. The only way i see is to assign keys with pattern ABC:22:* for example in database 1 then keys with pattern ABC:23:* in database 2 and so on. Then if you want to know how many keys with pattern ABC:22:* redis contains, you have to execute SELECT 1 then DBSIZE commands

Nespl NS3 Over a year ago

DBSIZE [Return the number of keys in the currently-selected database.]. it won't say how many keys are there with matching pattern.

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