Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
📚 Ultimate CheatSheets(Tutorials&MindMap), overview of syntax, features and practical tips, collection of useful code snippets, go from zero to hero at fly. 💫 干货满满的全栈开发速学速查手册集锦
