Programmer Group

Two days ago, we wrote a single task version of crawler, which crawled the user information of treasure net, so how about its performance? We can see from the network utilization. We can see from the performance analysis window in the task manager that the download rate is about 200kbps, which is quite slow. We analyze the design of single tas ...

Let's use go language to crawl "treasure net" user information. First, the request url is analyzed as follows: http://www.zhenai.com/zhenghun Next, use go to request the url. The code is as follows: package main import ( "fmt" "io/ioutil" "net/http" ) func main() { //Return request get return result resp, err := http.Get("ht ...

As we all know, the Go language is a strictly typed language, and when it is developed, it encounters uncertain input parameters. What should we do? The three points here (...) give us great flexibility for programmers, as follows Variable Quantity Parameters of Functions May refer to https://github.com/guyan0319/... Example package main impor ...

Verification code has been a very common anti-cheating and anti-attack means, in fact, it is not difficult for people with good technical level to achieve this function, but not everyone, every language is naturally suitable for a function... But we can shield differentiation by encapsulating interfaces, simplify the problem, and now use a simp ...

Short web addresses are sometimes a very new requirement. There are many such websites on the Internet, but sometimes they want to call interfaces to shorten the web addresses. Many of these websites are not provided. Commonly used interfaces on the Internet, such as Sina's short web interface, shallot computing Short web interface In fact, the ...

In the process of using map, two problems are often encountered: read-write conflict and traversal disorder. Why is this so? How is the bottom achieved? With these two problems, I have a simple understanding of the map add-delete check and traversal implementation. structure hmap type hmap struct { // Note: the format of the hmap is also en ...

Summary Many operations on the game server (both player and non-player) need to be transmitted to the company's mid-stage to collect summaries and analyze data according to operational needs. On the other side of the platform, we need to transfer the past data in JSON format. At first, we used encoding/json in the golang standard library and fo ...

There are functions and methods in Go language. The essence of methods is functions, but methods and functions have different points. function is a piece of code with independent functions, which can be called repeatedly to achieve code reuse. method is the behavioral function of a class, which can o ...

github:http://github.com/brewlin/im-... im-cloud builds distributed push middleware based on swoole native collaboration Installation and deployment of im-cloud distributed middleware IM-cloud <> GOIM distributed middleware concurrent pressure measurement comparison Analysis of im-cloud distributed middleware (1) - Communication Protoc ...

select Select is a key word commonly used in Go language. Linux has introduced this function to implement a non-blocking way. A select statement is used to select which case of sending or receiving operations can be executed immediately. It is similar to the switch statement, but its case involves channel-related I/O operations. select{ case &l ...