Consuming Netflow using NiFi

Posted on by David Vassallo

The problem Several network devices (especially Cisco) tend to use netflow for auditing network connections. It would be useful to log these connections in a structured data store (Elasticsearch is my data store of choice). Alternative Solutions Using the elasticsearch netflow module: https://www.elastic.co/guide/en/logstash/current/netflow-module.htmlThis works well right out of the box, and supports all netflow versions. … Continue reading Consuming Netflow using NiFi

Lessons Learned: GoLang GORM – filtering associations

Posted on by David Vassallo

The problem Given the following code: type User struct { gorm.Model Username string Orders []Order } type Order struct { gorm.Model UserID uint Foobar string } The above Golang code defines a "Has Many" association, leading to a schema where a "User" "has many" "Orders", with the "user_id" key acting as a foreign key. How … Continue reading Lessons Learned: GoLang GORM – filtering associations