---
title: "Logbook: November 14 to December 5, 2022"
description: "An edition of Fly’s Logbook covering November 14 to December 5, 2022 collects updates and tutorials for building and operating applications on Fly. It features a real-time collaboration example that connects Replicache with WebSockets and Fly-Replay, plus a LiveWire walkthrough for streaming server content to browsers and another for unloading data during large-dataset pagination. A separate guide explains how to run Supercronic from Fly Dockerfiles when precise cron timing is needed beyond Fly Machines’ monthly, weekly, daily, and hourly scheduling options. The edition also recounts how Fly Postgres was built, despite Fly’s stated preference for off-platform database services such as RDS, CrunchyData, and PlanetScale. The post notes that the update followed a longer break while many Fly staff spent time with family over Thanksgiving."
---

# Logbook: November 14 to December 5, 2022

[Fly.io](https://yomu.fyi/company/fly-io) · Dec 6, 2022

**Type:** Announcement

## Summary

An edition of Fly’s Logbook covering November 14 to December 5, 2022 collects updates and tutorials for building and operating applications on Fly. It features a real-time collaboration example that connects Replicache with WebSockets and Fly-Replay, plus a LiveWire walkthrough for streaming server content to browsers and another for unloading data during large-dataset pagination. A separate guide explains how to run Supercronic from Fly Dockerfiles when precise cron timing is needed beyond Fly Machines’ monthly, weekly, daily, and hourly scheduling options. The edition also recounts how Fly Postgres was built, despite Fly’s stated preference for off-platform database services such as RDS, CrunchyData, and PlanetScale. The post notes that the update followed a longer break while many Fly staff spent time with family over Thanksgiving.

## Context

The edition brings together recent application-building tutorials and a history of Fly Postgres. It also addresses the need for more precise cron timing than Fly Machines’ built-in monthly, weekly, daily, and hourly scheduling options provide.

## Approach / What changed

The post presents guides using Replicache, WebSockets, Fly-Replay, LiveWire, Supercronic, and Fly Dockerfiles, then recounts the history of Fly Postgres and its relationship to off-platform database services.

## Takeaways

- Replicache can be wired to WebSockets and Fly-Replay for real-time collaboration applications built with any framework and Fly.
- LiveWire tutorials cover streaming server content to browsers and unloading data during pagination so large datasets do not make a user’s browser slow or unresponsive.
- Supercronic provides a guide-based path to running cron with more precise timing on both versions of the Fly Apps platform; the post also chronicles how Fly Postgres was built.

**Tags:** [Fly.io](https://yomu.fyi/topic/fly-io), [Postgres](https://yomu.fyi/topic/postgres), [WebSockets](https://yomu.fyi/topic/websockets)

- Source: [Fly.io](https://fly.io/blog/logbook-november-14-to-december-5-2022)
- Source URL: https://fly.io/blog/logbook-november-14-to-december-5-2022
- Ingested by Yomu: 2026-09-03T01:24:13.482Z

[Read original post](https://fly.io/blog/logbook-november-14-to-december-5-2022)