Go's template engine provides powerful dynamic content generation capabilities through text/template and html/template packages, where html/template has automatic escape function to prevent XSS attacks, so it should be used first when generating HTML. 1. Use {{}} syntax to insert variables, conditional judgments and loops, such as {{.FieldName}} to access structure fields, {{if}} and {{range}} to implement logical control. 2. The template supports Go data structures such as struct, slice and map, and the dot in the range represents the current iterative element. 3. The named template can be defined through define and reused with the template directive. 4.ht

Go and Kafka integration is an effective solution to build high-performance real-time data systems. The appropriate client library should be selected according to needs: 1. Priority is given to kafka-go to obtain simple Go-style APIs and good context support, suitable for rapid development; 2. Select Sarama when fine control or advanced functions are required; 3. When implementing producers, you need to configure the correct Broker address, theme and load balancing strategy, and manage timeouts and closings through context; 4. Consumers should use consumer groups to achieve scalability and fault tolerance, automatically submit offsets and use concurrent processing reasonably; 5. Use JSON, Avro or Protobuf for serialization, and it is recommended to combine SchemaRegistr

When passing slices in Go, it is usually passed directly by value, because the slice header contains a pointer to the underlying array, and copying the slice header will not copy the underlying data, so the modification of elements in the function will affect the original slice; 1. If you need to reassign or adjust the slice length within the function and make the change take effect, you should pass the slice pointer; 2. Otherwise, you can pass the slice directly without using a pointer; 3. If reallocation may be triggered when using append, you must pass through the pointer to make the updated slice visible to the outside. Therefore, unless the entire slice is to be replaced, the slice should be passed in the form of a value.

govetcatchescommonlogicalerrorsandsuspiciousconstructsinGocodesuchas1)misuseofprintf-stylefunctionswithincorrectarguments,2)unkeyedstructliteralsthatmayleadtoincorrectfieldassignments,3)sendingtoclosedchannelswhichcausespanics,4)ineffectiveassignment

Use signal.Notify() in the os/signal package to register the specified signal (such as SIGINT, SIGTERM) into the buffer channel, so that the program can be captured instead of terminated by default; 2.

Usereflect.ValueOfandreflect.TypeOftogetruntimevaluesandtypes;2.Inspecttypedetailswithreflect.TypemethodslikeName()andKind();3.Modifyvaluesviareflect.Value.Elem()andCanSet()afterpassingapointer;4.CallmethodsdynamicallyusingMethodByName()andCall();5.R

To embed the file contents into the string of the Go program, you should use go:embed (Go1.16) to embed the file at compile time; 1. Add the //go:embed directive above the target variable; 2. Ensure the file path is correct and the file exists; 3. Use string type variables to receive text content; 4. Build the project through gobuild to include the file content. This method is safe and efficient and does not require additional tools, and ultimately implements the file contents directly into the binary file as strings.

In Go language, HTTP middleware is implemented through functions, and its core answer is: the middleware is a function that receives and returns http.Handler, used to execute general logic before and after request processing. 1. The middleware function signature is like func (Middleware(nexthttp.Handler)http.Handler), which achieves functional expansion by wrapping the original processor; 2. The log middleware in the example records the request method, path, client address and processing time-consuming, which is convenient for monitoring and debugging; 3. The authentication middleware checks the Authorization header, and returns 401 or 403 errors when verification fails to ensure secure access; 4. Multiple middleware can be nested to adjust