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We are going to create a A private host zone and test this private host zone with VPC1 and VPC2... for VPC3, you can follow the VPC2 as example. Creat 阅读全文
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Instance Profile contains Temporary credentials Role IP will help to rotate the temporary credentials on your behalf. in short, IP works as "Who am I" 阅读全文
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You can auto assign a public IP address when you launch a new EC2 instance. But if you didn't and you want to assign one after launched, you can use E 阅读全文
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There are two async exection context: Microtask Queue - ASAP (Promises, MutationObserver) Macrotask Queue - DO Later (setTimeout, setInterval, request 阅读全文
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lib.js import { parse, evaluate } from "groq-js" export let groq = async ([query]) => { let tree = parse(query) return async dataset => { let result = 阅读全文
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const ary = [1, 2, 3, 4, 2, 3]; const unqiAry = (ary) => ary.filter((item, index) => ary.indexOf(item) index) unqiAry(ary) // [ 1, 2, 3, 4 ] const ary 阅读全文
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S3 Usage Patterns S3 doesn't suit for following usecases: POSIX-compliant file system: should use EFS. POSIX -- refer to Linux or Unix files Structure 阅读全文
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Z-index cannot be added to static position DOM element. All the DOM element by default is static position. So if you have to add z-index, you can add 阅读全文
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let other = null console.log(other?.[0]) // undefined You can use optional chaining to access elements in an array. If the array is null or undefined, 阅读全文
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Minimum RTO for a single region outage For the minimum RTO in a single region we will follow up the same thing. We will have a monitoring team 24/7 av 阅读全文