Detailed explain of how HTTPS works — As the cost of HTTPS website construction has dropped, most websites have now begun to use the HTTPS protocol. You all know that HTTPS is more secure than HTTP, and you have also heard that concepts related to the HTTPS protocol include SSL, asymmetric encryption, CA certificates, etc., but can…

Send 100,000 HTTP requests quickly in Python — Suppose there is a file with 100,000 urls in it, and you need to send an http request to each url and print the status code of the request result. How to write code to complete these tasks as quickly as possible? There are many methods for concurrent programming in…

A little K8s knowledge every day! — In this article let’s discuss how K8s manages storage resources. First, let’s talk about Volume and how K8s provides storage for containers in the cluster through Volume ; then we will practice several commonly used Volume types and understand their respective application scenarios; finally, we will discuss how K8s uses…

10 Interesting Python Interview Questions — 1. Which of the following words is not a keyword in Python3 a) eval b) assert c) nonlocal d) pass The answer is a . The so-called keyword is an identifier reserved in advance by Python. Each keyword has a special meaning and cannot be used as a variable name. All keywords can be viewed through keyword. eval is a built-in function…

A little K8s knowledge every day! — In addition to “Liveness probe”, the K8s health check mechanism also includes Readiness probes. The user can tell K8s when to restart the container to achieve self-healing through the Liveness detection; the readiness detection tells K8s when the container can be added to the Service load balancing pool to provide…

Tips for making your Python program more secure — “12-Factor” is a methodology for building SaaS services that applies to applications developed in any language and backend services (databases, message queues, caches, etc.). One of the most important principles is configuration. 12-Factor requires strict separation of code and configuration. Why Strict Code and Configuration Separation? So if your code is placed on an external network…

How to create your own Helm Chart — In my last Helm article “Helm Operations”, I talked about some common helm operations and showed you how to deploy an existing sample Helm chart, this time let’s create our own Helm Chart . At one point, you will need to create your own customized Helm Chart , because you…

A little K8s knowledge everyday! — Strong self-healing capability is an important feature of container orchestration engines such as K8s. The default implementation of self-healing is to automatically restart failed containers. In addition, users can also use the Liveness detection mechanisms to set up finer health checks to achieve the following requirements: Zero downtime deployment. Avoid…

A little K8s knowledge everyday! — A little K8s knowledge everyday! Rolling update in K8s application deployment means update only a small number of Pods at a time, and after its success, update more Pods, and finally complete the update of all copies. The biggest benefit of rolling update is zero downtime, and there is always…