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Set default cache expiry in config #6

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15 changes: 9 additions & 6 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,9 @@ loopback-redis-cache is currently extended with the following plugins.
At your model (using config.json settings)
```
"mixins": {
"Rediscache": {}
"Rediscache": {
"expiryInSecs": 3600,
}
}
```
At your model (using external redis server)
Expand All @@ -55,19 +57,20 @@ At your model (using external redis server)
"client": {
"host": "redis.server.ip.address",
"password": "redis-password"
}
},
"expiryInSecs": 3600
}
}
```

Example
Example
``
http://0.0.0.0:3000/api/games?cache=120
``
cache value in seconds

### AngularJS SDK example

```
Category.findOne({
filter: {
Expand All @@ -82,7 +85,7 @@ At your model (using external redis server)
console.log(err);
});
```

### See also
-----------------------
Host your web site easily, instantly and FREE PHP, MySQL and free SSL One Click WordPress Installation!
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49 changes: 31 additions & 18 deletions rediscache.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,11 @@
module.exports = function(Model, options) {

var cachExpire = 0; // set default to 5 minutes

if(options.expiryInSecs){ // set from config
cachExpire = options.expiryInSecs;
}

if(options.client){
var clientSettings = options.client;
}else{
Expand All @@ -9,15 +16,15 @@ module.exports = function(Model, options) {
var redis = require("redis"),
client = redis.createClient(clientSettings);

var redisDeletePattern = require('redis-delete-pattern');
var redisDeletePattern = require('redis-delete-pattern');

client.on("error", function (err) {
console.log(err);
// try to connect again with server config
if(err.toString().indexOf("invalid password") !== -1){
console.log("Invalid password... reconnecting with server config...");
var app = require('../../server/server');
var clientSettings = app.get('redis');
var clientSettings = app.get('redis');
client = redis.createClient(clientSettings);
}
});
Expand All @@ -26,9 +33,11 @@ module.exports = function(Model, options) {
Model.beforeRemote('**', function(ctx, res, next) {
// get all find methods and search first in cache
if((ctx.method.name.indexOf("find") !== -1 || ctx.method.name.indexOf("__get") !== -1) && client.connected){
if(typeof ctx.req.query.cache != 'undefined'){
if(cachExpire>0){
var modelName = ctx.method.sharedClass.name;
var cachExpire = ctx.req.query.cache;
if (ctx.req.query.cache) {
cachExpire = ctx.req.query.cache;
}

// set key name
var cache_key = modelName+'_'+new Buffer(JSON.stringify(ctx.req.query)).toString('base64');
Expand All @@ -47,24 +56,26 @@ module.exports = function(Model, options) {
}else{
//return data
next();
}
});
}
});

}else{
next();
}
}else{
next();
}
});
}
});

Model.afterRemote('**', function(ctx, res, next) {
// get all find methods and search first in cache - if not exist save in cache
if((ctx.method.name.indexOf("find") !== -1 || ctx.method.name.indexOf("__get") !== -1) && client.connected){
if(typeof ctx.req.query.cache != 'undefined'){
if(cachExpire>0){
var modelName = ctx.method.sharedClass.name;
var cachExpire = ctx.req.query.cache;

if (ctx.req.query.cache) {
cachExpire = ctx.req.query.cache;
}

// set key name
var cache_key = modelName+'_'+new Buffer(JSON.stringify(ctx.req.query)).toString('base64');
// search for cache
Expand All @@ -80,23 +91,25 @@ module.exports = function(Model, options) {
next();
}else{
next();
}
});
}
});

}else{
next();
}
}else{
next();
}
}
});

Model.afterRemote('**', function(ctx, res, next) {
// delete cache on patchOrCreate, create, delete, update, destroy, upsert
if((ctx.method.name.indexOf("find") == -1 && ctx.method.name.indexOf("__get") == -1) && client.connected){
var modelName = ctx.method.sharedClass.name;
var cachExpire = ctx.req.query.cache;

if (ctx.req.query.cache) {
cachExpire = ctx.req.query.cache;
}

// set key name
var cache_key = modelName+'_*';

Expand All @@ -113,6 +126,6 @@ module.exports = function(Model, options) {

}else{
next();
}
}
});
}
}