ZhangHengrui

Results 4 issues of ZhangHengrui

原文这么介绍: > Redis 可以为每个键设置过期时间,当键过期时,会自动删除该键。 实际参考到的过期策略: ### 过期策略 #### 定期删除 redis 会将每个设置了过期时间的 key 放入到一个独立的字典中,以后会定期遍历这个字典来删除到期的 key。 Redis 默认会每秒进行十次过期扫描(100ms一次),过期扫描不会遍历过期字典中所有的 key,而是采用了一种简单的贪心策略。 1. 从过期字典中随机 20 个 key; 2. 删除这 20 个 key 中已经过期的 key; 3....

occure error: ``` [sysbench-1.0.20]# sysbench --threads=100 --thread-init-timeout=300 xxx oltp_read_write run sysbench 1.0.20 (using bundled LuaJIT 2.1.0-beta2) invalid option: --thread-init-timeout=300 [sysbench-1.0.20]# sysbench --version sysbench 1.0.20 ```

``` (cx_Oracle.DatabaseError) DPI-1047: 64-bit Oracle Client library cannot be loaded: "libclntsh.so: cannot open shared object file: No such file or directory". See https://oracle.github.io/odpi/doc/installation.html#linux for help (Background on this error at:...

您好,我尝试用线程池并发请求多个下载链接,然后在单个链接请求中调用您写的D2wnloader,但是出现了问题,想请教下,如有回复,不胜感激~ ```python # obj包含了url等信息 class FileDownload: def download_all_reqs(): with ThreadPoolExecutor(max_workers=8) as pool: for obj in objs: uuid = obj.get('uuid') logging.info(f'{uuid} is running') future_result = pool.submit(self.fetch_file, obj) results.append(future_result) wait(results, return_when=ALL_COMPLETED) logging.info('files...