轮询

https://www.bilibili.com/video/BV1Ke4y117UH/?spm_id_from=333.788&vd_source=46d50b5d646b50dcb2a208d3946b1598
https://juejin.cn/post/6844903503505293320

https://blog.csdn.net/m0_48333563/article/details/125968144

https://blog.csdn.net/qq_43692950/article/details/126086836

https://github.com/chengxy-nds/Springboot-Notebook/tree/master/springboot-realtime-data

https://blog.csdn.net/u010263423/article/details/118408737?spm=1001.2101.3001.6661.1&utm_medium=distribute.pc_relevant_t0.none-task-blog-2~default~CTRLIST~Rate-1-118408737-blog-125968144.pc_relevant_recovery_v2&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2~default~CTRLIST~Rate-1-118408737-blog-125968144.pc_relevant_recovery_v2&utm_relevant_index=1