High-performance Go web framework with typed handlers, auto CRUD, and custom async I/O transportNamed after ครุฑ, the Garuda of Thai mythology.
go get github.com/go-kruda/kruda
Path, query and JSON body bind into one struct. Validation tags run before your handler does, and the return type becomes the response and the OpenAPI schema.
Each tab is a complete program you can paste into main.go and run.
package main
import "github.com/go-kruda/kruda"
type CreateUser struct {
Name string `json:"name" validate:"required,min=2"`
Email string `json:"email" validate:"required,email"`
}
type User struct {
ID string `json:"id"`
Name string `json:"name"`
Email string `json:"email"`
}
func main() {
app := kruda.New()
kruda.Post[CreateUser, User](app, "/users",
func(c *kruda.C[CreateUser]) (*User, error) {
u := c.In
return &User{ID: "1", Name: u.Name, Email: u.Email}, nil
})
app.Listen(":3000")
}package main
import (
"context"
"github.com/go-kruda/kruda"
)
type User struct {
ID string `json:"id"`
Name string `json:"name"`
}
// Users implements kruda.ResourceService[User, string].
type Users struct{ db map[string]User }
func (s *Users) List(ctx context.Context, page, limit int) ([]User, int, error) {
out := make([]User, 0, len(s.db))
for _, u := range s.db {
out = append(out, u)
}
return out, len(out), nil
}
func (s *Users) Get(ctx context.Context, id string) (User, error) {
return s.db[id], nil
}
func (s *Users) Create(ctx context.Context, u User) (User, error) {
s.db[u.ID] = u
return u, nil
}
func (s *Users) Update(ctx context.Context, id string, u User) (User, error) {
s.db[id] = u
return u, nil
}
func (s *Users) Delete(ctx context.Context, id string) error {
delete(s.db, id)
return nil
}
func main() {
app := kruda.New()
// GET /users, POST /users, GET/PUT/DELETE /users/:id
kruda.Resource[User, string](app, "/users", &Users{db: map[string]User{}})
app.Listen(":3000")
}package main
import "github.com/go-kruda/kruda"
func main() {
app := kruda.New()
app.Get("/", func(c *kruda.Ctx) error {
return c.Text("Hello, Kruda!")
}, kruda.Plaintext)
app.Get("/users/:id", func(c *kruda.Ctx) error {
return c.JSON(kruda.Map{"id": c.Param("id")})
}, kruda.JSON)
app.Listen(":3000")
}Bind 30 query fields, validate the typed input, and return 30-field JSON — with 36.2% lower p99 than Fiber at equal load.