go.uuid VS fastapi

package main import ( "bufio" "encoding/binary" "encoding/hex" "fmt" "os" "strings" "time" ) func main() { scanner := bufio.NewScanner(os.Stdin) scanner.Split(bufio.ScanLines) for scanner.Scan() { id, _ := FromString(scanner.Text()) fmt.Println(id.Time()) } } func (me UUID) Nanoseconds() int64 { time_low := int64(binary.BigEndian.Uint32(me[0:4])) time_mid := int64(binary.BigEndian.Uint16(me[4:6])) time_hi := int64((binary.BigEndian.Uint16(me[6:8]) & 0x0fff)) return int64((((time_low) + (time_mid << 32) + (time_hi << 48)) - epochStart) * 100) } func (me UUID) Time() time.Time { nsec := me.Nanoseconds() return time.Unix(nsec/1e9, nsec%1e9).UTC() } // code below Copyright (C) 2013 by Maxim Bublis // see https://github.com/satori/go.uuid // Difference in 100-nanosecond intervals between // UUID epoch (October 15, 1582) and Unix epoch (January 1, 1970). const epochStart = 122192928000000000 // UUID representation compliant with specification // described in RFC 4122. type UUID [16]byte // FromString returns UUID parsed from string input. // Following formats are supported: // "6ba7b810-9dad-11d1-80b4-00c04fd430c8", // "{6ba7b810-9dad-11d1-80b4-00c04fd430c8}", // "urn:uuid:6ba7b810-9dad-11d1-80b4-00c04fd430c8" func FromString(input string) (u UUID, err error) { s := strings.Replace(input, "-", "", -1) if len(s) == 41 && s[:9] == "urn:uuid:" { s = s[9:] } else if len(s) == 34 && s[0] == '{' && s[33] == '}' { s = s[1:33] } if len(s) != 32 { err = fmt.Errorf("uuid: invalid UUID string: %s", input) return } b := []byte(s) _, err = hex.Decode(u[:], b) return } // Returns canonical string representation of UUID: // xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx. func (u UUID) String() string { return fmt.Sprintf("%x-%x-%x-%x-%x", u[:4], u[4:6], u[6:8], u[8:10], u[10:]) }

Link to source code :https://github.com/satori/go.uuid up to v5

Something to note is that all of this is still open source. Theoretically, someone can decide to fork SQLBoiler and add all the missing things, or send in a PR. A good example is that the current most popular uuid package. gofrs/uuid was forked from an unmaintained previously popular package.

It has been an interesting exercise developing this wrapper component. The fact that it seamlessly integrates with the FastAPI framework is just a bonus for me; I didn't plan for it since I hadn't learned FastAPI at the time. I hope you find this post useful. Thank you for reading, and stay safe as always.

FastAPI is a modern, high-performance web framework for building APIs with Python, based on standard Python type hints.

In this tutorial, I will demonstrate how to use Burr, an open source framework (disclosure: I helped create it), using simple OpenAI client calls to GPT4, and FastAPI to create a custom email assistant agent. We’ll describe the challenge one faces and then how you can solve for them. For the application frontend we provide a reference implementation but won’t dive into details for it.

That’s when I found FastAPI.

FastAPI & Uvicorn

Discussion at FastAPI GitHub: https://github.com/tiangolo/fastapi/issues/2696

An API application framework (such as FastAPI)

It’s been my experience that async Python frameworks tend to turn IO bound problems into CPU bound problems with a high enough request rate, because due to their nature they act as unbounded queues.

This ends up made worse if you’re using sync routes.

If you’re constrained on a resource such as a database connection pool, your framework will continue to pull http requests off the wire that a sane client will cancel and retry due to timeouts because it takes too long to get a connection out of the pool. Since there isn’t a straightforward way to cancel the execution of a route handler in every Python http framework I’ve seen exhibit this problem, the problem quickly snowballs.

This is an issue with fastapi, too- https://github.com/tiangolo/fastapi/issues/5759

Fast API.