TointegrateGolangserviceswithexistingPythoninfrastructure,useRESTAPIsorgRPCforinter-servicecommunication,allowingGoandPythonappstointeractseamlesslythroughstandardizedprotocols.1.UseRESTAPIs(viaframeworkslikeGininGoandFlaskinPython)orgRPC(withProtoco

Golangofferssuperiorperformance,nativeconcurrencyviagoroutines,andefficientresourceusage,makingitidealforhigh-traffic,low-latencyAPIs;2.Python,whileslowerduetointerpretationandtheGIL,provideseasierdevelopment,arichecosystem,andisbettersuitedforI/O-bo

To write a Dockerfile for basic Golang applications, you need to understand three core steps: selecting a suitable image, building an application, and packaging the operating environment. 1. Use multi-stage construction to reduce volume. In the first stage, use golang:1.21 image to compile and generate executable files. In the second stage, only copy the compilation results and run them. 2. Set CGO_ENABLED=0 to avoid C library dependencies, unify the working directory such as /app and use the COPY instruction to copy the code. It is recommended to cooperate with .dockerignore to exclude irrelevant files; 3. Specify specific Go versions such as golang:1.21 instead of latest to ensure the controllable version and improve CI/CD consistency and compatibility.

Yes, multiple Go versions can be installed on the same machine. It can be easily implemented using version management tools such as gvm or goenv. Gvm supports package collections, which are suitable for cross-environment testing, while goenv is similar to rbenv and is easy to operate. After installation, version switching is performed through commands such as gvmininstallgo1.20 and gvmusego1.20, and the default version is set. If you do not use the tools, you can manually install different versions to separate directories and switch by modifying the PATH environment variables, such as configuring the shell alias go120 and go121 to quickly switch. Regardless of the method, you should confirm the current version through government and check the Go binary path in the IDE to

TogetenvironmentvariablesinGo,useos.Getenv(),butconsiderLookupEnvforexistencechecks.1.Useos.Getenv("VAR_NAME")toretrieveavariable’svalueasastring,returningemptyifunset.2.Useos.LookupEnv()todistinguishbetweenunsetandemptyvariables.3.Provided

GousessignificantlylessmemorythanPythonwhenrunningwebservicesduetolanguagedesignandconcurrencymodeldifferences.1.Go'sgoroutinesarelightweightwithminimalstackoverhead,allowingefficienthandlingofthousandsofconnections.2.Itsgarbagecollectorisoptimizedfo

sync.WaitGroup is used to wait for a group of goroutines to complete the task. Its core is to work together through three methods: Add, Done, and Wait. 1.Add(n) Set the number of goroutines to wait; 2.Done() is called at the end of each goroutine, and the count is reduced by one; 3.Wait() blocks the main coroutine until all tasks are completed. When using it, please note: Add should be called outside the goroutine, avoid duplicate Wait, and be sure to ensure that Don is called. It is recommended to use it with defer. It is common in concurrent crawling of web pages, batch data processing and other scenarios, and can effectively control the concurrency process.

The key to installing Go is to select the correct version, configure environment variables, and verify the installation. 1. Go to the official website to download the installation package of the corresponding system. Windows uses .msi files, macOS uses .pkg files, Linux uses .tar.gz files and unzip them to /usr/local directory; 2. Configure environment variables, edit ~/.bashrc or ~/.zshrc in Linux/macOS to add PATH and GOPATH, and Windows set PATH to Go in the system properties; 3. Use the government command to verify the installation, and run the test program hello.go to confirm that the compilation and execution are normal. PATH settings and loops throughout the process