Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.
Introduction to events: event propagation — MDN Web Docs
，这一点在im钱包官方下载中也有详细论述
wire 开发文档：square.github.io/wire/
第三条 网络犯罪防治工作应当坚持中国共产党的领导，贯彻总体国家安全观，统筹发展与安全，按照打防结合、防范为先、源头治理、协同联动的原则，推进线上线下一体化防治，建立网络犯罪综合防治体系。