Group items tagged

Upgrading an Existing App

Approach Advantages Disadvantages Traditional Accepted within many organizations. With significant up front work, it's possible to develop accurate estimates and schedules. In practice, this approach results in significant wastage. Projects are often over budget and/or schedule anyway. Agile Stakeholders in complete control over how much money is spent, for how long, and on what. Currently not well accepted by senior management because it is different from their existing (and typically wrong) expectations. Requires a trustful relationship between IT and their business stakeholders. Requires the development team to work in a disciplined manner. Requires business stakeholders to be actively involved with the team and accountable for their decisions. Combination Possible to create a reasonable estimate and schedule without much effort Stakeholders in complete control over how much money is spent, for how long, and on what. Initial budget and schedule may not be perceived as sufficiently detailed. Requires business stakeholders to understand the realities of IT estimating. Requires a trustful relationship between IT and their business stakeholders. Requires the development team to work in a disciplined manner. Requires business stakeholders to be actively involved with the team and accountable for their decisions.

A primary objective of MHA is automating master failover and slave promotion within short (usually 10-30 seconds) downtime, without suffering from replication consistency problems, without spending money for lots of new servers, without performance penalty, without complexity (easy-to-install), and without changing existing deployments. MHA also provides a way for scheduled online master switch: changing currently running master to a new master safely, within a few seconds (normally 0.5-2 seconds) of downtime (blocking writes only).

Ace is a standalone code editor written in JavaScript. Our goal is to create a web based code editor that matches and extends the features, usability and performance of existing native editors such as TextMate, Vim or Eclipse. It can be easily embedded in any web page and JavaScript application. Ace is developed as the primary editor for Cloud9 IDE and the successor of the Mozilla Skywriter (Bespin) Project.