Using jedis How to cache Java object

Question

Using Redis Java client Jedis
How can I cache Java Object?

Answer 1

You can't store objects directly into redis. So convert the object into String and then put it in Redis. In order to do that your object must be serialized. Convert the object to ByteArray and use some encoding algorithm (ex base64encoding) and convert it as String then store in Redis. While retrieving reverse the process, convert the String to byte array using decoding algorithm (ex: base64decoding) and the convert it to object.

Answer 2

you should convert your object as a json string to store it, then read the json and transform it back to your object.

you can use Gson in order to do so.

//store
Gson gson = new Gson();
String json = gson.toJson(myObject);
jedis.set(key,json);

//restore
String json = jedis.get(key);
MyObject object=gson.fromJson(json, MyObject.class);