The installation was fine. I have some problems with the sqlite3 driver and I ought to switch back to the PostreSQL driver. I initially planned sqlite3 as deployment platform.I have to change my mind after losing over three hours trying to resolve a linking problems on the production machine. By the way with PostgreSQL I will have more powerful exporting capabilities

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Sometimes I need to build a small script to delete a huge set of tables of a schema.

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After a bit of work, I have managed to optimize the performance of my Postgresql Server.

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Sometimes you need to remove nasty duplicate on a table, based on a subset of the column. On every big database there is something called “rowid” which can be used to indentify a column in a unique way. On PostgreSQL is called ctid, as we shall see:

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I admit it. I suffered from an “algebra narcoleptic syndrome” during my relational database lessons at University (1996 circa).

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We already discussed about Queue management solutions in the past, and I am always happy to write about it. Queue managers are not easy to implement, and there is a reson if IBM MQ Series is still a successful product. Some month ago, a big bank customer asked me to provide a small queue implementation to increase asynchronous internal processing of our payment solution.

The project had very strong contraints: I could not use existing queue system because they were not yet available, and I need to be able to provide microservice parallelism in a cloud-environent.

I have very little time to provide a solid solution, and re-inventing the wheel was not an option. Performance was important, but we plan to have a managable numbers of transactions per seconds, far behind modern cloud database capacity.

Challenge accepted.

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