Author Archives: tobias
Download Docker image docker pull python Start up Docker image with just a bash shell as entrypoint docker run -it –rm –name python python /bin/bash now you should see something like this : Attach to a running docker container docker … Continue reading
So how do you serialize NULL ? NULL would typically mean that the attribute is omitted from the json, but what if you WANT the NULL to be there, to symbolize an attribute that should be REMOVED.
The purpose of this post is simply to give a hint on how to use Mockito, Spy, and JUnit 5.
These are just scratches/notes for my work with Prestashop Create copy of table / duplicate table (select into kind of)
This is how you would create a function that takes a function as argument in Java The Function<A,B> myFunc = num -> “Value = ” + num;Here :A = the type of the first argument, in this example an intergerB … Continue reading
How are Secondary Indices really stored ? This is based on the article from Datastax found here; https://www.datastax.com/blog/2016/04/cassandra-native-secondary-index-deep-dive Let’s just create a simple table
CREATE TABLE customer (
id int PRIMARY KEY,
Or visualized as a table : Column Type Key id int Primary Key city text name … Continue reading
If your microservice stops responding from time to time, and they only way out is to kill it with SIGINT or SIGTERM then adding a shutdown hook might be the way to go. Do note that this will not work … Continue reading
Zeppelin has become one of my favourite tools in my toolbox. I am heavily designing stuff for Cassandra and in Scala, and even though I love Cassandra there are times when things just gets so complicated with the CQL command … Continue reading
I have the intercom from Cardo Systems, and it is really good BUT when I updated the firmware some time agoe, it decided to install some software that takes port 8080, which is one of those really common ports used … Continue reading
For a long time it has not been possible to do a SELECT * FROM table WHERE firstname like ‘t%’; in Cassandra like you could in eg.. MySQL or any other Relation Database for that matter. In Cassandra v3.4 this … Continue reading