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PrimroseUvicorn & Gunicorn
Uvicorn and GunicornUvicorn and Gunicorn are important concepts when developing applications in Python. However, there are many concepts to be aware of in order to fully understand Uvicorn and Gunicorn. The following is a brief summary of the necessary concepts, and the details will be dealt with separately later.Necessary ConceptsStarletteStarlette is a Web application server that can run asynchronously. Starlette runs on top of Uvicorn.FastAPIFastAPI provides many features on top of Starlet...
PrimroseGas optimization in Solidity, Ethereum
I’m sorry but my English is terrible. I hope you understand that generously.Recently, I was developing a toy project named Blind Market. It’s a simple P2P trading application using smart contract. I was making a contract using Solidity, and the trade stage proceeded in the order of pending, shipping, and done. The problem was appeared in done phase. The problem was that when I tried to close the transaction by paying the price raised by the seller in msg.value, the following error occurred.Pe...
PrimroseP2WPKH
P2WPKHP2WPKH란 비트코인 내에서 가장 일반적인 스크립트 형식으로 비트코인 프로토콜에 대한 지불 거래 유형이다. 주소는 1로 시작하는데, 세그윗을 지원하는 새로운 주소 3 또는 bc1로 시작하는 주소보다 훨씬 비싸다. https://mirror.xyz/0xA1d9f681B25C14C1eE7B87f1CF102E73cA3ad4d9/egjhNVklgy_LgZmcTXXAOTBa6ePBqO3Ja9ZSoDIad-8 즉, 비트코인 주소가 1로 시작하면 P2PKH 주소를 사용하고 있는 것이다. 공개키의 간단한 해시이며, 이 해시를 주소로 사용하는 것이다. 이것은 원래 비트코인 주소 형식이었으며 오늘까지도 충실히 작동한다. 레거시 주소는 세그윗과 호환되지 않지만, 여전히 문제없이 P2PKH 주소에서 세그윗 주소로 BTC를 보낼 수 있다. 그러나 레거시 주소 트랜잭션이 더 크기 때문에 P2PKH 주소에서 전송하는 평균 속도는 세그윗 주소에서 전송할 때보다 더 높은 요금이 발생할 수 있다....
<100 subscribers
PrimroseUvicorn & Gunicorn
Uvicorn and GunicornUvicorn and Gunicorn are important concepts when developing applications in Python. However, there are many concepts to be aware of in order to fully understand Uvicorn and Gunicorn. The following is a brief summary of the necessary concepts, and the details will be dealt with separately later.Necessary ConceptsStarletteStarlette is a Web application server that can run asynchronously. Starlette runs on top of Uvicorn.FastAPIFastAPI provides many features on top of Starlet...
PrimroseGas optimization in Solidity, Ethereum
I’m sorry but my English is terrible. I hope you understand that generously.Recently, I was developing a toy project named Blind Market. It’s a simple P2P trading application using smart contract. I was making a contract using Solidity, and the trade stage proceeded in the order of pending, shipping, and done. The problem was appeared in done phase. The problem was that when I tried to close the transaction by paying the price raised by the seller in msg.value, the following error occurred.Pe...
PrimroseP2WPKH
P2WPKHP2WPKH란 비트코인 내에서 가장 일반적인 스크립트 형식으로 비트코인 프로토콜에 대한 지불 거래 유형이다. 주소는 1로 시작하는데, 세그윗을 지원하는 새로운 주소 3 또는 bc1로 시작하는 주소보다 훨씬 비싸다. https://mirror.xyz/0xA1d9f681B25C14C1eE7B87f1CF102E73cA3ad4d9/egjhNVklgy_LgZmcTXXAOTBa6ePBqO3Ja9ZSoDIad-8 즉, 비트코인 주소가 1로 시작하면 P2PKH 주소를 사용하고 있는 것이다. 공개키의 간단한 해시이며, 이 해시를 주소로 사용하는 것이다. 이것은 원래 비트코인 주소 형식이었으며 오늘까지도 충실히 작동한다. 레거시 주소는 세그윗과 호환되지 않지만, 여전히 문제없이 P2PKH 주소에서 세그윗 주소로 BTC를 보낼 수 있다. 그러나 레거시 주소 트랜잭션이 더 크기 때문에 P2PKH 주소에서 전송하는 평균 속도는 세그윗 주소에서 전송할 때보다 더 높은 요금이 발생할 수 있다....
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https://www.udemy.com/course/best-blockchain-az/
Let's start with an example when we buy a house. Whether you have money in cash or in the bank, you need money to buy a house.
If we paid for a house, how can I prove that I got this house?
If you go into any house and insist that it's your home, it doesn't become your home.
When we buy a house, we get a certificate of real estate rights in exchange for money. The name is slightly different, but I will go to a public institution to show the certificate and register the ownership.
It's a very condensed process, but the key is that ownership will be registered and recorded.
What if the ledger with this record is missing or manipulated? Then my house will not be my house.
Because I live physically, the people next door will think of me as the landlord, but my legal ownership has evaporated because my name has been deleted from the ledger.
At this time, blockchain technology appears. When all ownership and houses are bought and sold, a new block is added to this chain.
Every time a transaction will occur in this blockchain. Buying a house is like adding a new transaction.
If someone tries to change the data in a particular block, the hash in that block changes.
This means that the encryption link is no longer working, because the hash here is different from the hash previously recorded in the block.
For this reason, it is virtually impossible to change the record, which is why it is called an immutable ledger.
https://www.udemy.com/course/best-blockchain-az/
Let's start with an example when we buy a house. Whether you have money in cash or in the bank, you need money to buy a house.
If we paid for a house, how can I prove that I got this house?
If you go into any house and insist that it's your home, it doesn't become your home.
When we buy a house, we get a certificate of real estate rights in exchange for money. The name is slightly different, but I will go to a public institution to show the certificate and register the ownership.
It's a very condensed process, but the key is that ownership will be registered and recorded.
What if the ledger with this record is missing or manipulated? Then my house will not be my house.
Because I live physically, the people next door will think of me as the landlord, but my legal ownership has evaporated because my name has been deleted from the ledger.
At this time, blockchain technology appears. When all ownership and houses are bought and sold, a new block is added to this chain.
Every time a transaction will occur in this blockchain. Buying a house is like adding a new transaction.
If someone tries to change the data in a particular block, the hash in that block changes.
This means that the encryption link is no longer working, because the hash here is different from the hash previously recorded in the block.
For this reason, it is virtually impossible to change the record, which is why it is called an immutable ledger.
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