Whenever this happens to me, I create a StackOverflow self-q&a or a GitHub Gist synthesizing the knowledge. Then I use google to find my own content because I more or less remember the keywords of what I wrote. Also, many times, my coworkers find my answer on SO and get amused :)
(I could probably write some of those stuff on my personal blog, but SO has an added advantage of soliciting comments and alternative answers; people on blogs are less keen to do that IMO).
Fun fact: when I was interviewing for my last job, I got stuck on an unexpected issue when coding. I could use google, and found my gist from few years before with similar problem which got me unstuck (I totally forgot about having it written) as #1 item in Google.
IME, SO and gist index really well in Google and often end in top of results. HN, less do (unless you explicitly put hackernews or site:... in query).
(I could probably write some of those stuff on my personal blog, but SO has an added advantage of soliciting comments and alternative answers; people on blogs are less keen to do that IMO).
Fun fact: when I was interviewing for my last job, I got stuck on an unexpected issue when coding. I could use google, and found my gist from few years before with similar problem which got me unstuck (I totally forgot about having it written) as #1 item in Google.
IME, SO and gist index really well in Google and often end in top of results. HN, less do (unless you explicitly put hackernews or site:... in query).