Series

Building LeanZero Management

Notes from building a Microsoft-Project-style planner inside Jira Cloud, on Forge, against limits that are not negotiable.

LeanZero Management vs the Jira PPM field
What LeanZero Management does that the other Jira PPM tools don't Key takeaways A BUFFER TASK holds its end date fixed and shrinks as upstream work slips, then collapses and propagates once consumed.
Sep 18, 202625 min read
LeanZero Management: virtualising a 5,300-issue Gantt
LeanZero Management: virtualising a 5,300-issue Gantt Key takeaways A 5,300-issue plan rendered 94,920 DOM nodes. Row windowing took it to 2,115, and first paint from about 2.1s to about 1.1s. Row wi
Sep 18, 202619 min read
LeanZero Management: two scheduling engines, one schedule
LeanZero Management: two scheduling engines, one schedule Key takeaways When one rule has two implementations, don't test them for equality — test that one is a fixed point of the other. It tolerates
Sep 19, 202623 min read
LeanZero Management: the Jira dependency that actually moves dates
LeanZero Management: the Jira dependency that actually moves dates Key takeaways On Jira Free and Standard, a blocks link is a stored relationship and nothing reschedules. On Premium, Plans does auto
Sep 19, 202615 min read