https://github.com/candy-line/node-red-contrib-cache

Node-RED nodes for memory cache
https://github.com/candy-line/node-red-contrib-cache

cache-storage node-red

Last synced: 13 days ago
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Node-RED nodes for memory cache

• Host: GitHub
• URL: https://github.com/candy-line/node-red-contrib-cache
• Owner: CANDY-LINE
• License: mit
• Created: 2016-11-20T12:19:10.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2022-12-08T05:40:51.000Z (over 2 years ago)
• Last Synced: 2025-04-13T11:14:09.885Z (13 days ago)
• Topics: cache-storage, node-red
• Language: HTML
• Size: 337 KB
• Stars: 5
• Watchers: 2
• Forks: 6
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
Memory cache Node-RED nodes

===

[![GitHub release](https://img.shields.io/github/release/CANDY-LINE/node-red-contrib-cache.svg)](https://github.com/CANDY-LINE/node-red-contrib-cache/releases/latest)

[![master Build Status](https://travis-ci.org/CANDY-LINE/node-red-contrib-cache.svg?branch=master)](https://travis-ci.org/CANDY-LINE/node-red-contrib-cache/)

[![License MIT](https://img.shields.io/github/license/CANDY-LINE/node-red-contrib-cache.svg)](http://opensource.org/licenses/MIT)

Memcached-like memory cache Node-RED nodes. You can set/get values and provide them TTL if necessary.

There are 3 nodes in this project.

1. `Cache` configuration node ... Memory cache instance. Each configuration node is isolated from other `Cache` nodes. Default TTL is undefined (never expired). Default check period is undefined (never checked).

1. `Cache in` node ... Used for retrieving a stored value

1. `Cache out` node ... Used for storing a key-value pair. You can set TTL (in seconds) as well as key-value pair by providing TTL property.

The cache behavior is fully depending on [node-cache](https://www.npmjs.com/package/node-cache) library. But the project doesn't support full features of the library for making the nodes simpler.

### Installation

```

cd ~/.node-red

npm install --production node-red-contrib-cache

```

### Example flow

You can import an example from the menu (`Import > Examples > cache > Cache Example`) on the editor.

# Revision History

* 2.0.2-2.0.3

    - Fix JSON format error

* 2.0.1

    - Revise Default TTL description on the node help content and README as the node immediately clears its cache content when Default TTL is 0

* 2.0.0

    - Add a new feature to route a message object to another port on a cache miss, disabled by default (#3)

    - Introduce a new property 'dump' to dump all entries in the cache (#4)

* 1.1.0

    - Fix #2

    - Move the example flow to Import menu

* 1.0.4

    - Fix labels

* 1.0.3

    - Emit `null` when the retrieved value is `null`, `undefined` or `''(empty string)`

* 1.0.2

    - Remove redundant dependency

* 1.0.1

    - Fix an issue where the wrong TTL value can be used on storing a value when there’s no valid TTL property in the msg object

* 1.0.0

    - Initial release