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Business scenarioMulti tenancy of ClickHouse is a very necessary scenario. If there are no restrictions, users may consume too much resources of database services and affect the use of other users. This paper attempts to show you another relatively cheap method besides hardware level isolation.This article first describes the resource restricti ...

I have something to say Good friends, let's play single sign on today. Friends who haven't contacted will ask, "ah, what is single sign on?" Single sign on is... emmm. . . I Baidu for a while. It's probably like this 👇 OK, it looks simple. On the surface, it means that as long as I integrate this single sign on, I can log in o ...

Suffix Array S A \tt SA SA can be used in all aspects of string problems. Its purpose is to find the ranking of all suffixes of this string in dictionary order. Pre knowledge Multiplier / DC3 Algorithm usage It can be used to find the l ...

Process and thread Before learning Java multithreading, we need to understand the difference between process and thread. Process is a dynamic execution process of a program. It needs to go through a complete process from code loading, code execution to execution. This process is also the process of the process itself from generation, developm ...

1, Stm32subemx interrupt mode LED on 1. Interruption and its function       It is precisely because of the interrupt mechanism that I can methodically "complete multiple tasks at the same time". The interrupt mechanism essentially helps me improve my concurrent "processing" ability. It can also bring the sa ...

[note] this article is translated from: Introduction To Pragmatic Functional Java - DZone JavaPractical functional Java is a modern, very concise but readable java coding style based on the concept of functional programming.Practical functional Java (PFJ) attempts to define a new idiomatic java coding style. The coding style will make full use ...

2021SC@SDUSC This section continues to analyze the decryption process of BGV. The specific implementation of the decryption process is mainly in bgvrns-impl.cpp. 1 CryptoContext in palisade The core class of PALISADE is the CryptoContext class, which provides all PALISADE encryption functions. All objects used in the PALISADE implement ...

Implementation of leetcode BFS code framework Learning experience: There is such a sentence in the algorithm sketch. The operation of binary tree can derive a lot of algorithm ideas. More and more questions are brushed, and more and more experience will be gainedThere are also two forms of binary tree traversal, DFS and BFS. DFS includes thre ...

1.sizeof use a. Code 1 int main() { int a = 0; int arr[] = { 1,2,3,4 }; printf("%d\n", sizeof(a)); printf("%d\n", sizeof a); printf("%d\n", sizeof(&a));//Indicates the size of the address printf("%d\n", sizeof(int)); printf("%d\n", sizeof(arr));//Calculates the size of the array arr in bytes printf("%d\n", sizeof(arr)/sizeof(arr[0 ...

STM32 interrupt and DMA communication programming 1, Topic content Learn stm32 interrupt, DMA communication principle and programming method. Complete the following programming exercises using stm32tubemx and HAL libraries: One pin of the GPIOA end of the stm32F103 core board is connected to an LED, and one pin of the GPIOB port is conne ...