How would I start an inmemory version of cockroachDB to run my BDD? - cockroachdb

Hello all I am working creating on BDD's with cockroach DB. Unfortunately I am not able to find any reference document in order to create a BDD for cockroach DB.

If by BDD you mean behaviour-driven development, BDD isn't something you "create", it's a style of development that is guided and tested by the behaviours your application is intended to provide. I don't think CockroachDB offers any docs specifically related to developing using BDD, but there is a doc for general testing best practices with CockroachDB . Alternatively, a little background reading might be helpful:
BDD in general
and applying it to databases

Related

Is there enough to working with Spring Boot if I known to perform CRUD Operation?

I am a completely fresher for Spring Boot. I had learn to perform Basic CRUD operations using REST API. That basic knowledge is enough to working with Spring Boot Project. Can I able to work with that?
No one is technically perfect!
Every day we are exploring new things and implement new solutions as per the new business requirements. The developer should possess a good set of problem-solving skills. That’s because it’s common for developers to come across multiple programming problems while building just about any solution.
If your lead assigned a task to you explore quarkus and implement a simple CRUD operation using go language what you will do?
"I don't know golang", Is this your answer?
Qualities of a good junior software programmer
Learn new things daily which must be useful to the growth of the company, your team and you.
Problem Solving and Logical Thinking
Written and Verbal Communication
Teamwork
Interpersonal skills
Time management
How do I search for answers from StackOverflow like a PRO? This is a very important skill set, Really, I am not joking.
Health - Health(Physical/Mental) is an important asset, don't take official things personally. Manage stress etc...
Coming to technical side
It would be good if you know at least one programming language, in your case java is fine. But if you have the listed skill sets you can learn anything very easily.
Regarding Spring boot
Do you want to become an expert in the Spring framework? Work with one big project, whatever domain.
Refer - https://www.baeldung.com/
Once you become pro - Refer - https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/
As a starter this is fine, but if your application is going to face real customers/users and want to evolve your application over time, then you would need to consider concepts like below
Login/logout security with Spring Security (if stateless then JWT is a good choice)
Evolving code and database with versions of your software (can use Liquibase to evolve and maintain DB changes ).
Handling exceptions as Aspects from Spring.
Having coded business errors so your team can resolve them and classify them accordingly.

Neo4j and Ruby: How can I speed up unit testing?

Am starting to write unit tests along the lines of https://github.com/neo4jrb/neo4j/wiki/How-To-Test
One of the approaches there is really slow (10 seconds per test) and the other doesn't delete labels (and probably other things)
Can anyone suggest a more elaborate approach? I noticed that in the core neo4j material, the java documentation describes methods that create and tear down temporary databases, but I don't see a way to access those from the (very nice) ruby and rails neo4j gems. Perhaps via the low-level REST api? It's hard to figure out what api calls are available.
So you could probably surround your tests in transactions which is a typical approach for testing with ActiveRecord in Ruby. That might be more performant, but it should also help keep the database clean.
But you're right, the impermanent database is the tool that's provided in Neo4j for temporary databases for testing. I think that's only available if you're running JRuby, though. I did run across this, though:
https://groups.google.com/forum/#!topic/neo4j/7xeEPWEiqD0
Which links to a project which lets you start up a Neo4j server in "in memory" mode (using the impermanent database):
https://github.com/jexp/neo4j-in-memory-server
That's showing examples for Neo4j 2.0.0, so I don't know if it would work for later versions, but it might be worth a shot for your testing database.
EDIT: Another thing that I just thought of is to use the vcr gem:
https://github.com/vcr/vcr
It basically records all of the requests made to your server and then plays them back. This works great for API endpoints where result are idempotent, but if you use it for a database like Neo4j you should make sure that your tests are clearing the database before every test run so that it always starts fresh

What is a good choice for Fulltext indexing when developing a OSX application?

Hy,
I'm implementing an IMAP client as a Mac OSX application using MacRuby.
For the sake of offline availability, I wanted to allow fulltext indexing and attribute based indexing of all messages. Attributes include common E-Mail stuff like from:, to:, etc...
This would allow for advanced results sprinkled with faceting, analytic calculations and such.
Now I'm unsure about the choices and good practices when it comes to integrating such a search feature. I have a strong web development background, therefore my intuitive action would be to setup a Solr server and start feeding it with data. This might just work theoretically, as I could write an Agent that manages the solr instance for my application in the background. But to me, this approach seems like an infrastructure hassle.
On the other side, I've read about people using the FTS3 functionality from SQLite. This approach is easily accessible by CoreData. I haven't used SQLite's FTS3 but I don't think it is as powerful as Solr can be.
What is your weapon of choice for a use case like mine?
I'm mainly interested in solutions that are actually in use by Objective-C/Cocoa/MacRuby developers.
In you're going to develop the app with Ruby give a try to picky. It is very simple to use.
There is an Objective-C Lucene port
http://svn.gna.org/viewcvs/etoile/trunk/Etoile/Frameworks/LuceneKit/
I have not used it, but in your situation, I'd at least check it out. In my experience, SQL based full text search can't compete with Lucene, but haven't tried SQLite for this.
EDIT: just noticed the ruby tag -- this started out as port of Lucene
https://github.com/dbalmain/ferret

Anyone using RavenDB in a production environment?

I'm doing research on the maturity of some document-oriented stores, which includes an overview of applications and websites that use the database in production environments. There are several lists and case studies available for CouchDB and MongoDB, including:
CouchDB In The Wild
MongoDB Production Deployments
I'm having a hard time finding applications and websites that use RavenDB in production. Does anyone have first-hand experience with this, or examples of (well-known) sites that run on RavenDB?
There are several people in the process of deploying RavenDB, see the discussion thread here for more info.
A testimonial called Case Study: The First RavenDB Deployment was posted on the RavenDB site last month. Ayende's post on this case study features a comment of the interviewee, explaining a bit more on his decision-making.
We're about to pop a beta of http://sonatribe.com which uses ravendb extensivley
The developer experience is great and the support is the same.

Best practices for performance benchmarking test

I have a J2EE web-application running on Sun hardware with OpenSolaris/Glassfish stack. We're starting our performance bench-marking tests, to prepare for our scalability requirements later.
Any guidelines/best practices would be very useful..
If you are using JUnit? For simple Time Measurement in JUnit there is JUnitPerf which also supports LoadTests. JUnit 4 is not supported very well but it works for me. ContiPerf is an alternative which also supports annotations for easy configuration. I use this before using JMeter.
For a free Open Source tool I've found Apache's Jmeter pretty good:
http://jmeter.apache.org/
As Joe said you'll need to figure out how to model user behaviour and simulate user load.
I'm sure there is many generic ways to test server performance to be found on the web.
But have you thought that perhaps this an opportunity to gather stories and write a test tuned to exactly how your users will use the server? Even if it doesn't perfectly reflect the way that the server will ultimately work, it will let you start learning something rather than being only formal exercise. I think this is the spirit of agile development.

Resources