垃圾收集器

CMS:https://www.bilibili.com/video/BV1Zb4y1W7qT/?spm_id_from=333.999.0.0&vd_source=46d50b5d646b50dcb2a208d3946b1598
G1:https://www.bilibili.com/video/BV1PJ411n7xZ?p=186&vd_source=46d50b5d646b50dcb2a208d3946b1598

其他的收集器汇总:
https://zhuanlan.zhihu.com/p/521372827