I’m developing a new private product, but I’ve not decided the name of it yet. So, I’d like to do a poll about what name is good.
pgindent maintains the uniform layout style of postgresql related source code.
My first Chinese book has been published on 1st June.
I made a program to calculate ‘A * B mod N’, where A, B and N are 64 bit integers.
Main problem is to avoid overflow when calculate ‘A * B’.
I searched a while and finally decided to use the interleaved modular multiplication method, which is used in the feild of electric circuit design.
I found some bugs when I tested corner cases, so I have to fix them [2018.9.2].
I think I’ve fixed them [2018.9.3].
improved it! [2018.9.5]
The program is shown below:
In the standard setup of Citus, it has one coordinator, so it is the single point of failure and the bottle neck of the system.
To solve these disadvantages, I built a multi-coordinator using Streaming Replication, which is the built-in replication feature of PostgreSQL.
There is unfortunately no best practice when you should execute “VACUUM FULL”. The extension pg_freespacemap however gives you suggestion.
At the end of 2014, I was shocked at the progress of blind deblurring algorithm, so I studied the recent researches in this field.
I read many papers and made a system based on this paper: “Blind deconvolution using alternating maximum a posteriori estimation with heavy-tailed priors”.