What I'm advocating for is not to cache in RAM but as a file in something like S3. Build the full HTML page for a time period and store it as a blob, serve it t

What I'm advocating for is not to cache in RAM but as a file in something like S3. Build the full HTML page for a time period and store it as a blob, serve it to the user and have JS take over on the front end. You can use local storage to cache information on the client's computer and purge that cache after another predetermined time period. This way you are reducing the number of times you are busting the cache unnecessarily since it doesn't matter if you are getting up to the second vs up to the minute updates from reddit.