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Example code of moves/snowflake

Informations about the package snowflake

Snowflake

🚨 WARNINGS 🚨

This package is only compatible with 64-bit installations of PHP.

This package has not been tested against incredibly strenuous loads such as the actual traffic seen regularly by Twitter.

Introduction

This is a PHP implementation of Twitter's Snowflake, Sony's Sonyflake, and our own custom Modelflake ID generator.

Traits are also included which allow you to directly and automatically generate IDs on Eloquent Model classes.

Installation

To add this library into your project, run:

Usage

Eloquent Models

Prerequisites

For each separate deployment of your application, be sure to set a unique value for the SNOWFLAKE_MACHINE_ID environment key.

The default implementation of the provided Eloquent Snowflake generator traits requires you to have a configured Cache driver.

🚨 It is important to note that the file Cache driver is not supported for deployments on distributed infrastructure such as "Serverless"/AWS Lambdas. 🚨

Snowflake IDs rely on the creation of a unique sequence number. On traditional deployment systems where each "environment" necessitates exactly one physical or virtual server instance, atomic sequence number generation is only necessary between threads on each individual server. However, with modern deployment systems where a single "environment" may consist of any number of physical or virtual servers, atomic locking must be ensured across all server instances. This is only possible via a dedicated microservice, or via a shared cache system.

Usage

To use the ID generator of your choice on your Eloquent Model classes, simply add the corresponding trait to your Model.

Moves\Snowflake\Traits\EloquentTwitterSnowflakeId for Twitter Snowflake

Moves\Snowflake\Traits\EloquentSonyflakeId for Twitter Snowflake

Moves\Snowflake\Traits\EloquentModelflakeId for Twitter Snowflake

or

Moves\Snowflake\Traits\EloquentSnowflakeId to specify your own custom ID Generator class

On create, your model class will automatically generate a unique ID and apply it to your model instance before it is inserted into the database.

Note that JavaScript only supports up to 53-bit integers, and thus integer snowflake IDs will not be processed as the correct value when retrieved as data from your API. As such, all of the included ID generation traits also automatically add string casting on your model's key field so snowflake IDs are returned as strings when using toArray or toJson.

Overriding Default Sequence Number Generation

The supplied traits provide a default implementation for generating a unique sequence number, relying on Laravel's Cache facade and atomic locking. However, you can override the default implementation by providing your own function closure which returns a unique sequence number. See Providing Your Own Generator for more details.

Providing Your Own Generator

To provide your own generator class, use the Moves\Snowflake\Traits\EloquentSnowflakeId trait, and implement the following method header:

You can build your own class which implements the ISnowflakeGenerator interface, or you can provide an instance of one of the generators from this package with alternate values passed to the constructor.

For example, this is how you might provide your own sequence number generator function to the TwitterSnowflake generator:

Direct Usage

This package is still usable outside of Eloquent model classes. Instantiate and call the appropriate generator class wherever you need it:

You can also use the generators to parse an existing Snowflake ID into its component parts:

All versions of snowflake with dependencies

PHP Build Version
Package Version
Requires php Version ^8.1
illuminate/support Version ^10.0
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