本地Map缓存

package com.cars.forwardservice.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

@Controller
@ResponseBody
//@RestController
public class TestController {

    private static Map<String, Object> cache = new HashMap<>();

    @GetMapping("/cache/put")
    public String testCache(String key,String value){
        cache.put(key,value);
//        Class<? extends Map> aClass = cache.getClass();
//        System.out.println("aClass = " + aClass);
        System.out.println("cache = " + cache);
        return "ok";
    }

    @GetMapping("/cache/get")
    public Object testCache(String key){

        return cache.get(key);
    }
}

package com.atguigu.gulimall.search.cache;
import java.util.HashMap;
import java.util.Map;

public class CacheTest {

    private static Map<String, Object> cache = new HashMap<>();

    public static void main(String[] args) throws InterruptedException {
        int cnt = 0;
        while (cnt < 5000){
            Thread.sleep(1000);
            String chchemy = chchemy();
            System.out.println(chchemy);
            cnt++;
        }
    }

    public static String chchemy() {
        String cacheLog = (String) cache.get("cacheLog");
        if(cache.get("cacheLog") == null) {
            String log = "myCacheLog";
            cache.put("cacheLog", log);
            return log;
        }
        return cacheLog;
    }

}