Month: December 2018

Searching JSON: compare text search in Couchbase and MongoDB.

Searching JSON: compare text search in Couchbase and MongoDB.

“Apps without search is like Google homepage without the search bar.” It’s hard to design an app without a good search.  These days, it’s also hard to find a database without a built-in search. MySQL to NoSQL, Sybase to Couchbase,...

December 21, 2018
Exploring RxJava – Wrapping a Listener Callback

Exploring RxJava – Wrapping a Listener Callback

In this post, I’ll show how to convert a callback-based listener style API to a reactive one with RxJava 2. Contents Introduction Objective Getting Started Creating a Source Listing: BasicSource.java Listing: UnboundSource.java Converting to an Observable Listing: Observables.java Instantiation and...

Meeting data protection needs for Couchbase Data Platform

Meeting data protection needs for Couchbase Data Platform

In the world where data is the currency, backup & recovery for a database is as essential as any other defining parameter such as consistency or performance because the customers cannot afford data loss under any circumstance. Couchbase offers a...

Navigating Kubernetes Vulnerabilities with the Autonomous Operator

Navigating Kubernetes Vulnerabilities with the Autonomous Operator

The first critical vulnerability in the Kubernetes container orchestration platform was disclosed earlier this month.  This vulnerability affects all versions of Kubernetes greater than 1.0.0. It also affects RedHat OpenShift platform versions greater than 3.0.0. In this post we look...

N1QL & SEARCH: Leverage Full-Text Search (FTS) Index in N1QL

N1QL & SEARCH: Leverage Full-Text Search (FTS) Index in N1QL

With Couchbase v6.5, Full-Text Search is now integrated into the Couchbase N1QL query construct. Customers can now leverage FTS indexes directly with N1QL. This provides developers a single API to combine N1QL exact predicate matching and FTS powerful searching. The...

December 11, 2018
How to Certify Couchbase Autonomous Operator On Azure AKS

How to Certify Couchbase Autonomous Operator On Azure AKS

Our goal on the Couchbase Kubernetes testing team is to rigorously test the Autonomous Operator (AO) and certify the underlying Couchbase Server clusters that the AO manages. We test the AO for proper creation, management, and failure recovery of the...

December 11, 2018
JSON to Insights: Nobel Prize Winners dataset.

JSON to Insights: Nobel Prize Winners dataset.

Nobel prizes are announced over a week in October and the award ceremony is today, December 10th (“It’s already tomorrow in Australia”). There is an interesting story of the how C. V. Raman (of Raman effect) booked his ticket to...

December 9, 2018
JSON to Insights: Analyzing US healthcare Data.

JSON to Insights: Analyzing US healthcare Data.

“Nothing is certain except for death and taxes.” This isn’t a dataset made with a bed of roses or manicured green grass. A bit more serious. Let’s see if we can quickly learn anything here. The dataset is the following. “name”...

December 7, 2018
JSON to Insights: Fast and Easy

JSON to Insights: Fast and Easy

Co-author:  Sitaram Vemulapalli, Principal Engineer, Couchbase R&D. “The answer my friend is hiding in JSON” – Bob Dylan There are a lot of public JSON datasets and then is awesome JSON datasets. Every company, including yours, has stored a lot of...

December 1, 2018
Understanding Cross Data Center Replication (XDCR) – Part 1

Understanding Cross Data Center Replication (XDCR) – Part 1

If you have any familiarity with Couchbase, you definitely know XDCR. If you use Couchbase for any of your applications, you are very likely using XDCR. I wouldn’t be wrong if I said, XDCR is indeed one of our customers’...