Have the writing process do it. Which kind of reminds me of that product running on a pseudo-distributed NoSQL database built out of text files with "record pe

Have the writing process do it. Which kind of reminds me of that product running on a pseudo-distributed NoSQL database built out of text files with "record per line" structure and sort of a compacting garbage collector for these files to remove dead records. And there's just absolutely nothing that can go wrong with that.