Lucky Money Funny App
Hi all, I have just released a tiny web3 application. This application comes from my friend’s actual need and I hope everyone has the same. INTRODUCTION Sometimes, he wants to…
Category: Tech
How fast to take AWS Certificates?
Explore all AWS Certification exams HOW? Step 1: Complete courses and labs on https://acloudguru.com Step 2: Complete some exams on https://www.examtopics.com/exams/amazon/aws-certified-solutions-architect-professional (Optional) Step 3: Complete simulation exams and understand all…
Solidity Smart Contract Convention X
Just a convention to make a good-looking contract. :3 STRUCTURE FORMAT & LINT Format standard Lint Verify before commit COMMIT RULEs DO use Semantic Commit Messages: https://gist.github.com/joshbuchea/6f47e86d2510bce28f8e7f42ae84c716 DO use Git Branching…
An AWS Cloud architecture for web hosting - 3 Tiers
Public Terraform source: https://github.com/nhancv/terraform.aws.public Best practice: https://docs.aws.amazon.com/whitepapers/latest/web-application-hosting-best-practices/an-aws-cloud-architecture-for-web-hosting.html I saw some mistakes of Full-stack developers about web hosting. To deliver better app should check some points: Make sure you optimize the…
HOW TO CONFIG REDIRECT ROOT/NAKED ROUTE53 DOMAIN HTTP TO WWW HTTPS Using S3 and CloudFront with Route53
STEPs S3 static website hosting bucket same domain name with direct mode Cloudfront using Origin domain of S3 website endpoint (NOT bucket name) + custom domain + custom SSL (via…
Verify smart contract request with multi-signature approach
First, create a mintable token ERC20Mintable Create EIP712 multi-signature MultiSigEIP712 Create test scripts_truffle/eip712.js scripts_truffle/eip712ex.js test/MultiSigEIP712.test.js Start test Ganache-cli does not support eth_signTypedData_v4, you need hardhat instead https://hardhat.org/hardhat-network/ # Install hardhat nodenpm…
Solidity get interface id and ERC165
To get interface id, use Remember interfaceId = xor of all selectors (methods) name and param type, don’t care to return type For example: Return zero with empty interface Return…
About Smart Contract
If you are a smart contract developer, you will need to consider something about the contract: Clean: No unused code, nonsense comment, Well document: Comment to all functions Formatted: Reformat,…
About dividend token
I have some exp with this kind of topic “Dividend Token”. Just share some thoughts What is “Dividend Token”? You should search for more detail. =]] But you can go…
Host your own PancakeSwap Testnet
https://github.com/nhancv/pancake-swap-testnet#readme Preparing source Clone pancake-swap-core Clone pancake-swap-periphery Clone pancake-swap-interface-v1 Setup Install contract merger: https://www.npmjs.com/package/sol-merger Prepare PancakeFactory and PancakeRouter Deploy PancakeFactory and PancakeRouter Access: https://remix.ethereum.org/#optimize=false&runs=200&evmVersion=null&version=soljson-v0.5.16+commit.9c3226ce.js Deploy WBNB New File: WBNB.sol => Copy source from https://gist.github.com/nhancv/b0b35f16472e4998d0fd17b7a1e4f707 Compiler tab => Select compiler: v0.8.3+commit.8d00100c Deploy tab…