RSS

Monthly Archives: June 2017

Amazon Networking Services, Part Two

Episode 76

In the previous episode, we started dive into Amazon networking services group with VPC. I’ve mentioned networking services in the AWS introduction episode, as one of three most basic, along with storage and compute.

rocks-bridges-fantasy-artwork-1920x1080.jpg

Aside from VPC, networking category consists of three more services: Route 53, a DNS provider named after port number not the American Highway. CloudFront, for throwing pictures of cats at our users even faster. Finally, Direct Connect, to upload those pictures to the cloud while offline (and of course: faster).

Route 53

Route 53 is a Domain Name System (DNS), a naming service used since the beginning of the Internet. It facilitates translation of human-friendly names into IP addresses understood by routers, computers and other connected devices that supports TCP/IP stack. When we type an address in the browser, it’s checked whether it’s stored locally and if not, if it’s available in DNS cache. If it’s not, there is a query to Read the rest of this entry »

 
1 Comment

Posted by on June 29, 2017 in AWS, Cloud, Technology

 

Tags: , , , ,

Amazon Networking Services, Part One: VPC

Episode 75

We had a four-week break from AWS to talk extensively about GeeCON, as well as our guest author article about scaling Scrum. Let’s get back to the cloud again as we have another important group of services to tackle. I’ve mentioned networking services in the AWS introduction episode, as one of three most basic, along with storage and compute. This was supposed to be third article about group of services, but somehow it comes fourth, after an article on databases. Also, it will have two parts. Let’s start with VPC service.

Kartandtinki1_mine-wallpaper_06.jpg

Virtual Private Cloud is used to divide our cloud into logically separate sections and conquer various network elements, including: subnets, route tables, DHCP, access control lists, security groups, internet gateways, elastic IPs, elastic network interfaces, endpoints, NAT gateways and instances, peering connections and VPN configurations. Lots of stuff to play with indeed.

Basics

VPC is a networking layer for EC2 instances. It was launched three years later than EC2 and, because of that, there are actually two networking platforms in AWS. The older one is called EC2-classic, but Read the rest of this entry »

 
3 Comments

Posted by on June 23, 2017 in AWS, Cloud, Technology

 

Tags: , , ,

Nexus Overview

Episode 74

First guest author has arrived! Today’s episode is written by Kate Terlecka and will be an introduction to The Nexus Framework, a tool for Scrum scaling. Have fun!

yanchong-lim-dfswef

What’s the most fashionable word in current agile world?

Scaling!

Yep. If you don’t scale you’re a lame 1999 oldtimer, not worthy of attention. Only Scrum? But you’re supposed to have BIG Scrum!

There is a reason why creators of two largest Scrum scaling frameworks refused to describe and name them for years. Only when SAFe started being marketed aggressively, they’ve had a change of heart. Bas Vodde and Craig Larman decided to name what they have been teaching for years LeSS (Large Scale Scrum) and Ken Schwaber decided to finally formalize and name Nexus. Read the rest of this entry »

 
1 Comment

Posted by on June 15, 2017 in Agile

 

Tags: , ,

Geecon 2017 Kraków: Day Three

Episode 73

Two weeks ago we have covered first day of Geecon 2017 Kraków conference, day two was week ago. Now it’s time to take a closer look at third and final day. I’ve managed to participate in five talks this time.

Market_square_Krakow_900px.jpg

Henning Schwentner: Value types – the next big Java Thing.

“Codes like a class, works like an int” is the idea behind project Valhala – value types, the next big thing planned for Java after lambdas and modules. Objects have variable state and reside on heap, while values are immutable and reside on stack. The main benefit is ability to create rich domain models while retaining the high performance of primitives. Value types definition will be Read the rest of this entry »

 
Leave a comment

Posted by on June 8, 2017 in Misc, News, Technology

 

Tags: , , ,

Geecon 2017 Kraków: Day Two

Episode 72

Last week went through stuff from the first day of Geeon 2017 conference, which took place between 17th to 19th May in Kraków. Today we will continue and cover seven talks I’ve been to on day two. There will be a lot of reactiveness, events, architecture, APIs, security and some pretty low level topics.

686586676_002d6111b5_b.jpg

Jakub Pilimon: Event Sourcing

Command query responsibility segregation, event sourcing and event driven architectures are typical buzzwords on conferences nowadays. Jakub introduced the idea and confronted the approach with relaying on object-relational mapping to do the job. There was quite a lot of live code and Hibernate guts debugging. We heard stories on how Twitter almost collapsed in 2012 due to using the same models for writing and reading data and how to lose a girlfriend due to different projections of event log in the relationship. Read the rest of this entry »

 
1 Comment

Posted by on June 1, 2017 in Misc, News, Technology

 

Tags: , , ,