Скачать или смотреть Nicholas Clark: Cron::Sequencer - Replaying Crontabs (and the Pitfalls on the Way) | PerlKohaCon 23

PayProp's batch systems are scheduled by crontabs. We want to be able to replay history to test refactored code against the original, to give us coverage for corner cases - especially the unknown unknowns.

Knowing when a given crontab line runs - plenty of choices. But putting different commands in crontab in order - nothing did this.

Hence Cron::Sequencer.

This talk starts with an overview of the module and the problems it sets out to solve. But "no plan survives contact with the enemy" - when the code was 80% complete I realised I needed to redesign the internals. So the second 80% of the talk covers how I solved this, explaining several obscure but very useful features of Getopt::Long



PerlKohaCon 2023 Conference brings together in Finland specialists on two fields: Koha and Perl.

Koha is a free and open source library system. In Finland, it is in use in the National Library of Finland, the National Repository Library, several universities and special libraries as well as in public libraries of about a hundred municipalities. Globally, Koha is used by many thousands libraries. Perl is the programming language behind Koha.

The conference that will be at the University of Helsinki, August 14th through 18th, 2023, will be an excellent opportunity for developers to meet users and vice versa. We look forward to build better understanding and new networks between communities.

More information on the conference website: https://perlkohacon.fi/

All conference recordings:    • PerlKohaCon 2023  

All conference presentation slides: https://www.doria.fi/handle/10024/187...

PerlKohaCon 2023 is organized by the National Library of Finland, and Koha-Suomi Ltd. The National Library provides Koha as a SaaS to other scientific libraries. Koha-Suomi Ltd. is a not-for-profit, owned by the municipalities whose public libraries use Koha. They both are active participants in the international Koha developer community, too.