1. 需求：

页面显示时，需要使用汉字显示，但是在进行点击后，需要用到编码搜索。

2. 说明：

3. 核心代码：

            for j in aggs[i]['buckets']:
                if j['key']:
                    code_val = db_code_read_from_cache(j['key'])
                    if code_val:
                        # 缓存中读到数据
                        tmp_ret.setdefault('val', []).append({'key': code_val, 'val': j['doc_count']})
                    else:
                        # 缓存中没有数据，从数据库中获取数据，并且存入缓存,时限一天过期
                        code_val = NewDbs.objects.filter(code=j['key']).first().name_cn
                        # 以code为键
                        db_code_write_to_cache(j['key'], code_val)
                        # 以中文为键
                        db_name_write_to_cache(code_val, j['key'])
                        tmp_ret.setdefault('val', []).append({'key': code_val, 'val': j['doc_count']})

utils.py

from django.core.cache import cache

# 存储数据库缓存
from cykj.settings import DB_TIME_OUT


def db_code_read_from_cache(code):
    key = 'db_code_' + code
    val = cache.get(key)
    if val:
        return val
    else:
        return None


def db_code_write_to_cache(code, val):
    key = 'db_code_' + code
    cache.set(key, val, DB_TIME_OUT)


def db_name_read_from_cache(name):
    key = 'db_name_' + name
    val = cache.get(key)
    if val:
        return val
    else:
        return None


def db_name_write_to_cache(name, val):
    key = 'db_name_' + name
    cache.set(key, val, DB_TIME_OUT)