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

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

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

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

Usecontext.WithTimeouttocreateacancellablecontextwithadeadlineandalwayscallcancel()toreleaseresources.2.ForHTTPrequests,settimeoutsusinghttp.Client.Timeoutorusecontextviahttp.NewRequestWithContextforper-requestcontrol.3.Ingoroutineswithchannels,usese

UsestructswithPERJSontagsFeRpredictabledatoensurefast, safeparsingwithcompile-timetypesafety.2.avoidmap [string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] interface {string] }duetoreflectionoverheadandruntimetypeassertionsunlessdealingwithtrulydynamicJSON.3.Usejson.RawMessagefordeferredorselectivep

Go's switch statement will not be executed throughout the process by default and will automatically exit after matching the first condition. 1. Switch starts with a keyword and can carry one or no value; 2. Case matches from top to bottom in order, only the first match is run; 3. Multiple conditions can be listed by commas to match the same case; 4. There is no need to manually add break, but can be forced through; 5.default is used for unmatched cases, usually placed at the end.