Published angel3_redis

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thomashii 2021-06-21 09:58:05 +08:00
parent 1a63e8f6bd
commit 92df34f375
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# 2.0.0
# Change Log
## 2.0.0
* Migrated to support Dart SDK 2.12.x NNBD
# 1.0.0
* First version.
## 1.0.0
* First version.

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MIT License
MIT License (MIT)
Copyright (c) 2018 The Angel Framework
Copyright (c) 2021 dukefirehawk.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

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# redis
[![Pub](https://img.shields.io/pub/v/angel_redis.svg)](https://pub.dartlang.org/packages/angel_redis)
[![build status](https://travis-ci.org/angel-dart/redis.svg)](https://travis-ci.org/angel-dart/redis)
# Angel3 Redis
Redis-enabled services for the Angel framework.
`RedisService` can be used alone, *or* as the backend of a
[`CacheService`](https://github.com/angel-dart/cache),
and thereby cache the results of calling an upstream database.
[![version](https://img.shields.io/badge/pub-v2.0.1-brightgreen)](https://pub.dartlang.org/packages/angel3_redis)
[![Null Safety](https://img.shields.io/badge/null-safety-brightgreen)](https://dart.dev/null-safety)
[![Gitter](https://img.shields.io/gitter/room/angel_dart/discussion)](https://gitter.im/angel_dart/discussion)
[![License](https://img.shields.io/github/license/dukefirehawk/angel)](https://github.com/dukefirehawk/angel/tree/angel3/packages/redis/LICENSE)
**Forked from `angel_redis` to support NNBD**
Redis-enabled services for the Angel3 framework. `RedisService` can be used alone, *or* as the backend of a [`CacheService`](https://pub.dev/packages/angel3_cache), and thereby cache the results of calling an upstream database.
## Installation
`package:angel_redis` requires Angel 2.
`package:angel3_redis` requires Angel3.
In your `pubspec.yaml`:
```yaml
dependencies:
angel_framework: ^2.0.0-alpha
angel_redis: ^1.0.0
angel3_framework: ^4.0.0
angel3_redis: ^2.0.0
```
## Usage
Pass an instance of `RespCommands` (from `package:resp_client`) to the `RedisService` constructor.
You can also pass an optional prefix, which is recommended if you are using `angel_redis` for multiple
logically-separate collections. Redis is a flat key-value store; by prefixing the keys used,
`angel_redis` can provide the experience of using separate stores, rather than a single node.
Pass an instance of `RespCommandsTier2` (from `package:resp_client`) to the `RedisService` constructor. You can also pass an optional prefix, which is recommended if you are using `angel3_redis` for multiple logically-separate collections. Redis is a flat key-value store; by prefixing the keys used, `angel3_redis` can provide the experience of using separate stores, rather than a single node.
Without a prefix, there's a chance that different collections can overwrite one another's data.
## Notes
* Neither `index`, nor `modify` is atomic; each performs two separate queries.`angel_redis` stores data as JSON strings, rather than as Redis hashes, so an update-in-place is impossible.
* Neither `index`, nor `modify` is atomic; each performs two separate queries.`angel3_redis` stores data as JSON strings, rather than as Redis hashes, so an update-in-place is impossible.
* `index` uses Redis' `KEYS` functionality, so use it sparingly in production, if at all. In a larger database, it can quickly
become a bottleneck.
* `remove` uses `MULTI`+`EXEC` in a transaction.
* Prefer using `update`, rather than `modify`. The former only performs one query, though it does overwrite the current
contents for a given key.
* When calling `create`, it's possible that you may already have an `id` in mind to insert into the store. For example,
when caching another database, you'll preserve the ID or primary key of an item. `angel_redis` heeds this. If no
when caching another database, you'll preserve the ID or primary key of an item. `angel3_redis` heeds this. If no
`id` is present, then an ID will be created via an `INCR` call.
## Example
Also present at `example/main.dart`:
```dart
import 'package:angel_redis/angel_redis.dart';
import 'package:angel3_redis/angel3_redis.dart';
import 'package:resp_client/resp_client.dart';
import 'package:resp_client/resp_commands.dart';
import 'package:resp_client/resp_server.dart';
main() async {
var connection = await connectSocket('localhost');
var client = new RespClient(connection);
var service = new RedisService(new RespCommands(client), prefix: 'example');
var client = RespClient(connection);
var service = RedisService(RespCommandsTier2(client), prefix: 'example');
// Create an object
await service.create({'id': 'a', 'hello': 'world'});
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// Close the connection.
await connection.close();
}
```
```

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import 'package:angel_redis/angel_redis.dart';
import 'package:angel3_redis/angel3_redis.dart';
import 'package:resp_client/resp_client.dart';
import 'package:resp_client/resp_commands.dart';
import 'package:resp_client/resp_server.dart';

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import 'package:angel_http_exception/angel_http_exception.dart';
import 'package:angel_redis/angel_redis.dart';
import 'package:angel3_redis/angel3_redis.dart';
import 'package:resp_client/resp_client.dart';
import 'package:resp_client/resp_commands.dart';
import 'package:resp_client/resp_server.dart';