International Business Machines Corporation

Yong Xin Qi

Qin Yue Chen

Zhi Hong Li

Xi Xue Jia

Shu Han Weng

Shuai Wang

Tie Liu

Qi Liang

Na Tian

Bang Ling Gu

A method, computer program product, and a system where a processor(s), in a computing environment comprised of multiple containers comprising modules, includes a processor(s) parsing a module originating from a given container in the computing environment by copying various identifying aspects of a module file comprising the module and calculating, based on contents of the module file, a digest value as a unique identifier for the module file. The processor(s) stores the various identifying aspects of the module file and the digest value in one or more memory objects, wherein the one or more memory objects comprise a module content map to correlate the unique identifier for the module file with the contents of the module, images in the module file with the unique identifier for the module file, and layers with the unique identifier for the module file.

Performance of containers

Embodiments of the present disclosure relate to update for a configuration file. In an embodiment, a computer-implemented method is disclosed. According to the method, a first container image and a second container image are obtained. The first container image comprise a first sequence of layers built based on a sequence of commands in a configuration file, respectively, and the second container image comprise a second sequence of layers built based on the sequence of commands, respectively. File dependency between at least two commands of the sequence of commands is determined by comparing files associated with the first sequence of layers with files associated with the second sequence of layers. An update to the sequence of commands in the configuration file is determined based on the file dependency. In other embodiments, a system and a computer program product are disclosed.

Update for configuration file

A method, computer system, and computer program product for accelerating class data loading in a containers environment are provided. In response to a first container in a containers environment being created from a first image, at least one archive file containing a set of classes from the first image can be loaded. Then a respective class sharing file for each of the at least one archive file can be generated. The class sharing file is stored in a shared location. A second container in the containers environment is created from a second image. If a class sharing file from the archive is found in the shared location, that class sharing file can be used.

Class data loading acceleration

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Beijing, China

Yong Xin Qi