This post shows how to marshall NULL values from the database into Go struct and how to avoid mistakes during fetching optional values with SELECT query. I’ll show standard types sql.NullString, sql.NullInt64, etc types.
Section 5.7 of “The Little Book of Semaphores” presents the last of the “less classical” synchronization problems. It’s another problem presented in “Concurrent Programming”, called “the roller coaster problem” and attributed...
In section 5.6 of “The Little Book of Semaphores”, Allen Downey says this problem might have originally come from Anthony Joseph at U.C. Berkeley: Somewhere near Redmond, Washington there is a rowboat that is used by both Linux hackers and Microsoft employees (serfs)...
In section 5.5 of “The Little Book of Semaphores” the following is called “building H₂O”: There are two kinds of threads, oxygen and hydrogen. In order to assemble these threads into water molecules, we have to create a barrier that makes each thread wa...
“The Little Book of Semaphores” presents the following as the “Santa Claus problem”, and attributes it to William Stallings: Stand Claus sleeps in his shop at the North Pole and can only be awakened by either (1) all nine reindeer being back from their va...
Last time I wrote about the “Barbershop problem” from the “The Little Book of Semaphores”. Ian Dawes pointed out that the solution I presented can be further simplified: instead of having a gorotine dedicated to arbitrating the waitroom, make the channel b...
~21MB Well, I found yesterday that LogPacker Daemon weights about 21MB. This application is written in Go language, it’s really doing a lot of things, has built-in connectors to different Data-Storages, has Cluster solution inside, etc.