Programmer Think

1. Title Give you a m * n grid, where each cell is either 0 (empty) or 1 (obstacle). At each step, you can move up, down, left and right in blank cells. If you can remove up to k obstacles, find the shortest path from the upper left corner (0, 0) to the lower right corner (m-1, n-1), and return the st ...

title: wechat applet development date: 2020-06-26 07:45:20 tags: wechat applet categories: wechat applet development file Document address Applets provide a simple and efficient application development framework and rich components and API s to help developers develop services with native APP ex ...

Preface You've learned the principles of Redission reentrant locks and fair locks before, and then you'll see how Redission implements RedLock. RedLock principle RedLock is a redis-based distributed lock that guarantees the following features: Mutual exclusion: At any time, only one client can hold a lock; avoid deadlocks: When the clie ...

Copy constructor (copy constructor) 1, Copy constructor concept Copy constructor is a special kind of constructor. When creating an object, it uses the previously created object in the same class to initialize the newly created object. Copy constructors are commonly used for: Initialize the newly cr ...

nacos Distributed Configuration Center Personal Alibaba nacos Renovation Project: alibaba_nacos 1. Service Startup Configuration Loading Source: NacosPropertySourceLocator Workflow: Nacos customizes the PropertySourceLocator to get data from the configuration center at service startup, then add and re-run the local environment to load the confi ...

Super long warning!!! It is recommended to look at the catalogue first Introduction to docker and related cases It's not easy to summarize. If you agree, please like it~ If there is any mistake, please correct it! Docker directory Document introduction Docker overview Why does Docker appear? Docker ...

Abstract: LeNet-5 is a convolutional neural network designed by Yann LeCun in 1998 for handwritten digit recognition. Most American banks used it to recognize handwritten digits on cheques. It is one of the most representative experimental systems in the early convolutional neural network. It can be said that LeNet-5 is equivalent to "H ...

1, rocketmq installation Installation media Download Download address: http://rocketmq.apache.org/release_notes/release-notes-4.7.0/Download binary installation package Upload to the server for decompression Start command: cd /usr/local/rocketmq/ # 1. Start mqnamesrv first #Start command nohup sh b ...

k8s uses Nodeport to expose services There are many ways to expose K8s services. Here we mainly study how to expose services through Nodeport First of all, we must understand several concepts before exposing ports: *< 1 >. Server: it is a cluster instance entry composed of accessing backend pod replicas. It consists of: ` [cluster_ip] ` ...

Author: Tony Liu translator: TF Compilation Group 1 integration of kubernetes and TF In the integration scheme, there are two connections between Kubernetes and Tungsten Fabric. Contract Kube manager and Kube API server Contrail CNI 1.1 contrail-kube-manager This service connects to the Kube A ...