Password-protected ZIP archives are common means of compressing and sharing sets of files—from sensitive documents to malware samples to even malware (phishing
ZRAM if you have no HDD/SSD swap partition.
ZSWAP if you do have a HDD/SSD swap partition.
ZCACHE: It does what ZSWAP does and ALSO compresses and speeds the filesystem page cache. (It is internally much more complicated and is not in the mainline kernel as it is still under development).
J. Voges. Fortschritt-Berichte VDI, (2022)https://doi.org/10.15488/12422 https://doi.org/10.51202/9783186878106-I https://www.vdi-nachrichten.com/shop/compression-of-dna-sequencing-data/ https://elibrary.vdi-verlag.de/10.51202/9783186878106-I/ ISBN print: 978-3-18-387810-9 ISBN online: 978-3-18-687810-6.