Pre- and Post-Processing Workflows
The transfer is rarely the whole job. Before a file leaves, something usually has to validate it, rename it, compress it, or encrypt it. After one arrives, something has to check it, unpack it, transform it, and put it where the next system looks. These pre- and post-processing steps are where file automation earns its keep. They are also where most of its failures actually happen, one stage removed from the transfer everyone is watching.
This series gives the surrounding steps their due. It covers the anatomy of a transfer pipeline, validating files before they leave, and compression done deliberately. It covers transforming files between systems that disagree about formats and routing each file to the right destination. It also covers orchestrating multi-step workflows without building an accidental monster.
Articles in This Series
- The Anatomy of a Transfer Pipeline
Acquire, validate, transform, transfer, verify, route, notify: this article explains why separating stages beats one mega-script. It covers what passes between stages, and how to draw your own pipelines. - Validating Files Before They Leave
This article explains how to catch bad files at the cheapest moment. This article covers structure checks - columns, encoding, row counts - and business sanity checks on totals and ranges. It covers schema thinking for flat files and reject handling. - Compression in Transfer Pipelines: When and How
This article covers when compression pays and when it wastes CPU, and the common formats in plain terms. It explains the compress-then-encrypt ordering rule, verifying archives before and after transfer, and decompress-on-arrival. - Transforming Files Between Systems
This article covers encoding conversions, line endings, delimiter and format changes, header rows added and stripped, and mapping tables. It explains how to keep transforms small, testable, and logged. - Routing: Getting Each File to the Right Destination
This article covers routing by name, source, or content, and the routing table as configuration rather than code. It covers fan-out to multiple destinations and detecting the misroute before the recipient does. - Orchestrating Multi-Step Transfer Workflows
This article covers sequencing with dependencies, passing state between steps, and surviving a failure midway. It covers the workflow diary that says what happened - and the signs a script has grown into a workflow-tool need.
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This series is part of the Sysax file transfer topic library. The library covers the protocols, security practices, automation techniques, and operational skills behind reliable file transfer. The library pairs well with the practical tools we build. Sysax Multi Server is a secure FTP, FTPS, SFTP, and HTTPS server for Windows. Sysax FTP Automation schedules and scripts secure transfers so the routine ones run themselves.