Overambitious API Gateways

Did you know? Thoughtworks put “overambitious” API gateways on HOLD in their tech radar. What does it mean? Should we all stop using API gateways? Was it a trend that is over now?

Remember ESBs?

Actually, no, not at all. I had a discussion with a Thoughtworker and he explained “It’s a bit like the situation we had with ESBs. They were just too heavy, blown out of proportion, and often used in the wrong places”. I guess most of us working in the SOA space will agree. Some of us have seen ESBs doing file transfer, master data replication and event streaming (sometimes even at the same time).

Proper API Gateways

Let’s put it the other way around. Use an API Gateway if you require a stable API as a frontend to your clients with a high-throughput entry point to a possibly serverless / FaaS architecture (let me assume you are trendy). Let’s not forget traffic management, version management of APIs, and monitoring.

Actually – if you look closely – an API Gateway product is even on the tech radar under platforms and rated as “access”.

Anyway, I must admit that I like the term. Overambitious API Gateway. I actually consider getting some crisps and a beer, lean back and wait to see overambitious microservices, overambitious FaaS, and certainly overambitious DevOps popping up. And of course no need to mention overambitious IOT, now that Mark made it into the Guardian with his Kettle.

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Feedback: Big Data Training: Hadoop, Spark, Kafka, Cassandra, Oracle

Guys, thanks for attending my DOAG training day about Cloudera/Hadoop and Oracle Big data. I am pleased about your amazing feedback!

Statistics about Big Data Training Day

About the course

Attendees had the following opinion about the course when asked right after the training

  • 100% of those who answered would recommend the course
  • 100% of all found it interesting
  • 81% found that content matched their experience
  • 86% were happy or very happy with the course (these are the 2 highest grades possible)
  • 0% were unhappy
  • Everyone  except one person (that is 20 people) found the level of difficulty okay.
  • Everyone except one person found that they were engaged enough

About myself

The following is what attendees mentioned as feedback about myself (there were no explicit questions about Edelweiss, so she is not included unfortunately). Multiple answers were possible, answers weren’t mandatory. This basically tells that someone making a cross at e.g. informative sincerely means it.

  • 86% found me interesting
  • 40% entertaining 🙂
  • 90% informative
  • 71% demonstrative and clear

OSB / SOA Suite 12c Domain Types

OSB / SOA Suite 12c Domain Types

screen-shot-2016-11-30-at-16-22-10Let me explain you some news about the domain types in 12c, since some of my colleagues were fiddling around with this. Due to the new quickstart installer for SOA Suite and OSB 12c there are more domain types available now for SOA Suite and OSB12c that you need to understand. The following options describe those types with added comments of when the make sense.

 

 

Options:

  1. The integrated domain that gets generated by JDeveloper if you run a project. Sometimes it is called default domain. This domain is bound to JDeveloper. Whenever you quit JDev, the domain shuts down. The downside is that this domain always supports OSB and SOA Suite, so a bit of waste of resources if you are only after OSB . This is the easiest solution for your first steps because no manual domain creation is required and JDev does it all for you.
  2. A standalone domain. This is the new and interesting option, because a standalone domain uses the Java DB and does not require you to run the RCU utility. Still a standalone domain is running independent from JDeveloper 12c, so you could you use this type of domain for development with OSB web console.You create the domain by setting the QS_TEMPLATES environment variable and running qs_config.sh, then create an application server connection with JDev, use the integrated server option in the application server connection wizzard, and point it to the standalone domain.
    There are more benefits to a standalone domain not mentioned in the official documentation: Whereas the integrated domain includes everything needed for SOA suite you can restrict a standalone domain to Service Bus only and therefore reduce the number of internal deployments from 304 to 278 which will save you startup time.
  3. A compact domain can be used with quickstart. Also compact domains are targeted for development. This domain will be compatible with add-ons such at MFT, OES, etc. Note that you have to specify a special parameter CONFIG_JVM_ARGS=-Dcom.oracle.cie.config.showProfile for this option to be visible in the configuration wizzard.
    Since you can use it with an compatible Oracle DB, the necessary schemas have to be created with the RCU utility. Note: A compact domain is a developer domain consisting of a single admin server and no managed servers.
    The opposite of a compact domain is called extended domain where resources are deployed on a cluster of managed servers. Use extended domain for environments such as test, integration, load test, prod. These environments are distributed and clustered typically due to HA requirements.

Conclusion

It is important to understand the various domain types and to choose the correct domain type for your requirements. You can strip down a standalone domain to be OSB only, then make sure to select Integrated Servers if you want to deploy directly from JDev to it.

It’s a wrap: Oracle and Cloudera Big Data Training – On Premise and Cloud

Wow – We have done it! Weeks of preparation, reading, trying out tools, and hacking went into the preparation of this training course. Even during the OTN APAC tour I took some days off and worked from my Bangkok home office to prepare for the DOAG trainings day.

At the end it was totally worth it. I had 21 top notch DBAs and developers on the attendee list, also some 10 students attended. DOAG is running a good student program. For helping out a little bit students are allowed to attend sessions and the DOAG training day. Quite often I get a lot of them. 2 years ago I was running a full day multi-cloud training and every single student including their professor decided to attend my session – although they had the choice amongst 6 different trainings. Anyway, nice to be popular with the young people. Next time I will come in sneakers and wear that Cloudera T-Shirt. Also it became a bit of a challenge for Oracle to attract students. So I am glad to help 🙂

Fabulous news was that Edelweiss took over the Oracle part, so I was lucky to talk about what I love – the open source and Cloudera part.

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Edelweiss did her session via Skype. I was a bit sceptical and expecting technical problems because of the network latency but it went swimmingly. The conference room had good speakers, so I could play some music in the break and Edelweiss almost seemed to be present in the room but kind of invisible.

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Well now you know it. This is what is cool.

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A really great surprise was that everyone enjoyed the idea of working with VirtualBox and accepted labs that I prepared. Most people took them home to further play with the Big Data Lite instance.

At the end we covered a whole lot of content in a long day:

From Open Source / Cloudera Stack 

From Oracle Big Data Products

Oracle Big Data ApplianceOBIEEOracle Data Integrator (ODI)Oracle Big Data Discovery

Training Day: Cloudera Hadoop Stack with Kafka and Cassandra and Oracle Big Data / BI

Right after the DOAG conference 2016 in Nürnberg / Germany we will be running a big data training day. Meet the big 4: Hadoop, Spark, Kafka (all 3 from the Cloudera distribution), and Cassandra. Plus Oracle Big Data on top. For details in German see here.

Topics of the workshop are the following (subject to change):
Open Source / Cloudera Stack 

Oracle Big Data Products

Oracle Big Data Appliance

OBIEE

Oracle Data Integrator (ODI)

Oracle Big Data Discovery

 

The training day will include live demos and some are running in the cloud. So stay tuned!

This event will be co-hosted by Edelweiss Kammermann, Oracle ACE director from Uruguay and BI expert. Edelweiss will present mostly about Oracle Big Data / Business Intelligence, whereas I will try to cover the open source Hadoop / Cloudera part.

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