spring-boot-sample/src/main/java/me/hatter/sample/common/session/CustomSession.java

package me.hatter.sample.common.session;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

public class CustomSession {
    private static final ConcurrentMap<String, Object> cache = new ConcurrentHashMap<>();
    private final String prefix;

    public CustomSession(String prefix) {
        this.prefix = prefix;
    }

    public void put(String key, Object value) {
        cache.put(prefix + ":" + key, value);
    }

    public Object get(String key) {
        return cache.get(prefix + ":" + key);
    }

    public String getSessionId() {
        return prefix;
    }
}