Couchbase SF Node.js SDK Slides

Transcript

2. Couchbase  Clusters:     The  Node.js  SDK  
3. Presenta9on  Summary   •  Couchbase  Node.js  Client  Overview   •  Basic  Opera9ons   •  View  Opera9ons   •  Troubleshoo9ng  &  Error  Handling  
4. Client  Overview  
5. Node.js  Client  Library  Basics     •  Implemented on top of libcouchbase with a C++ binding layer between Node.js and libcouchbase. •  Release 1.0.0-beta of Couchnode! •  Apache 2.0 License open source project -  http://github.com/couchbase/couchnode/ •  Easy, automatic installation through the NPM Registry: shell> npm install couchbase
6. GeHng  Started   var couchbase = require("couchbase"); var bucket = new couchbase.Connection({ bucket:"default", password:"", host:"localhost:8091" }); bucket.set("foo", "val", function(err, result) { bucket.get("foo", function(err, result) { }); });
7. Basic  Opera9ons  
8. Loading  Documents   bucket.get("foo", function(err, result) { console.log(result.value); }); bucket.getMulti(["foo", "bar"], function(err, results) { for(var key in results) console.log(results[key].value); });
9. Muta9ng  Documents   bucket.set("foo", "value", function(err, result) { ... }); bucket.add("foo", "heart", function(err, result) { ... }); bucket.setMulti({ "foo": {value:"foo_value"}, "bar": {value:"bar_value"} }, function(err, results) { ... });
10. Durability  Requirements   bucket.set("foo”, "value", { persist_to: 1, replicate_to: 1 }, function(err, result) { ... });
11. View  API  
12. View  Querying   bucket.view("beer", "brewery_beers").query({ limit: 10, key: ['abba'] }, function(err, results) { bucket.getMulti(results, function(geterr, getresults) { console.log(getresults); }); });
13. Error  Handling  
14. Opera7on  Errors   •  All callbacks have the potential to return an error as their first parameter: bucket.add("foo", "heart", function(err, result) { if(err && err.code == couchbase.errors.keyAlreadyExists) { // Uh oh... Key already exists. Lets ignore it. return; } console.log(err); });
15. Connec7on  Errors   •  Additionally, it is possible that serious errors, not specific to a particular operation will be emitted by the Connection itself: var bucket = new couchbase.Connection(); bucket.on('error', function(err) { console.log(err); });