obtaining error data from an access log that is associated with an application;

determining an error scenario represented in the error data by applying a rule to the error data, wherein applying the rule includes pattern matching with respect to the error data or parsing with respect to the error data, wherein determining the error scenario represented in the error data comprises identifying the rule from one or more rules through which the pattern matching or parsing of the error data indicates the error scenario, and wherein the error scenario corresponds to the application being requested to provide a file more than a threshold number of times within a fixed period;

determining, based on respective associations between a plurality of predetermined error scenarios and a plurality of fix scripts, a fix script that is associated with the error scenario, wherein the fix script is configured to generate an updated version of the file based on source data associated with the file, wherein each particular rule of the one or more rules contains a name of a particular application to which the particular rule applies, a location of a resource, a frequency at which the resource is to be checked, a definition of a pattern matcher or parser to apply to data of the resource, and a specification of one or more of the plurality of fix scripts; and

causing execution of the fix script.