This is a follow up tutorial on the DRBD replication posts about gracious role switching of live sites configured with DRBD replication. More than a year ago I described in a long tutorial how to use DRBD in a real production environment and the challenges associated to it. See: DRBD based disk replication of a… Read More: #DRBD: Gracious role switching of live sites configured with DRBD… »
The following is a very interesting post about different database technologies and when to use them. It is a good way read that helps you to explain to people that you do not have to use some DB tech only because is the new cool boardroom word 🙂 When to use Cassandra, MongoDB, HBase, Accumulo… Read More: Blog links: How to choose your database technology »
A great introduction to blockchain hype, void of all the marketing blah-blah and boardroom nonsense. A must read for anyone that wants to know what blockchain is all about. What is Blockchain Technology? A Step-by-Step Guide For Beginners [paypal_donation_button]
As I described in a previous post Apache: How to use reverse secure proxy to chain secure apache servers – updated I have a configuration of chained secure apache servers, where one of the servers provides https resources but also acts as a reverse proxy for another server providing https resources. On the first server… Read More: #Apache: Use #letsencrypt.org certificates with an apache server behind a… »
One of the best introduction tutorial I have seen about a useful tool set. I am sick of all the empty marketing “pitches” I see daily. Oracle Trace File Analyzer (TFA) – An Overview Guide A must read for anyone that has to work with Oracle DB and needs to do a deep investigation of… Read More: Blog Links: Oracle Trace File Analyzer (TFA) »
A very interesting article about the anonymity issues of Bitcoin and alternatives. Bitcoin Isn’t Anonymous Enough. There are companies that already offer Bitcoin OFAC and AML: Elliptic You may think again if you want to switch from cash to cryptocurrencies for your “under the radar” payments. But still even with cash you have to keep… Read More: Blog Links: Anonymity of cryptocurrencies »
This is a continuation of the post Install a Nexus Repository. In the following I will describe how to deploy a raw maven repository for the docker-compose files, docker make files and other text files. This repository will be used as the main entry point to the docker repository. STEP 1: Create a raw repository… Read More: Docker: Install a Nexus Raw Repository for Docker-compose files »
I had the task to find a way to store centrally docker containers of enterprise applications. The following constraints had to be met: – the containers should be used for QA and training by people who do not need to know the details of deploying complicated enterprise application environments. Docker-compose files will be used to… Read More: #Docker: Install a #Nexus Repository »
A very interesting distributed storage solution Infinit Storage Platform. So interesting that the small company that implemented it was bought by Docker. By the way it has a docker plugin so can be mounted as a volume in any docker container. Looks like a very nice way of having a distributed, high availability storage with… Read More: Blog Links: Infinit Storage »
When using Hibernate as a layer between your Java code and the Database layer you release control on how the actual SQL query is generated. Hibernate will generate from the HSQL you write the “best” query. That “best” is in fact sometimes sub-optimal. A very important Hibernate 4 (make sure you have at least 4.2.5)… Read More: Hibernate: Optimize updates with @DynamicUpdate »