Posts

Protobuf and JSON are two popular methods for structuring data for efficient storage and transfer. Protobuf is more efficient than JSON in terms of byte array size, but it takes longer to convert an object to a byte array and changes to the message structure require code generation. When Protobuf is used to replace JSON at large scale, it can save massive amounts of bandwidth. Example Github Repository here Protobuf file Marshal Lets start with some go code with the protos already defined and working....

Part 1 , Part 2 HTTP Api’s often use the url path to identify resource name, id and possibly an action. These parts of the URL path are divided by the / character. Here is an example of using path parameters to implement a key value store where data is saved using the following request GET /set/$key/$value and retrieved using the request GET /get/$key using only the standard library. Go Playground: https://go....

Part 1 , Part 2 Go is an excellent choice for writing your next http service. It supports multithreaded request handling with the standard library and many other convenient features that makes creating a new application a breeze. Here is an example of a http service that returns the current time as json. Playground: https://go.dev/play/p/gZGKLEhHkPR package main import ( "encoding/json" "log" "net/http" "time" ) // Response is a simple json response // that will be returned by the http server // the json tags are used to specify the // json keys type Response struct { Status string `json:"status"` // json key is "status" Time string `json:"time"` // json key is "time" } // this is a simple http server that returns a json response func main() { // create a new http serve mux // the serve mux is used to register http handlers // for different paths mux := http....

Part 1 , Part 2 , Part 3 , Part 4 , Part 5 Goroutines can be used to start independent long running task. These tasks can be entire microservices, which is very useful for creating a single application with multiple system responsibilities. The select statement will block and wait for a channel to be ready for reading, then after reading from the channel the code will be executed. Playground: https://go....

Part 1 , Part 2 , Part 3 , Part 4 , Part 5 Buffered Channels in Go are similar to unbuffered channels, but they allow a writer to write without blocking if the channel is not full, which can be useful for concurrent data processing where the reader needs to be decoupled. However, using buffered channels can consume memory even when the buffer is empty, so they should be used with care....