Describe ioBroker Data storage and usage (adapter.writeFile ....)

[Apollon77]

Important stuff

• meta vs meta.user object defines a namespace inside ioBroker storage
  • meta = not in backup, notmally only for www/admin files
  • meta.user will be in backup
• Important: never write info iobroker-data/files directly! Else meta data of storage willö get out of sync! Always use adapter functions to write and read
• Important: All content stored there will be in RAM when someone uses redis!! So do not store big data amounts there . the purpose of stuff there is:
  • make sure adapters also on other hosts casn access it (incl. visus), so maybe only store the last images of a door-camera and not the history of the last week :-)
• overview about methods available and how to call them (especially - see first comment - adaptername aka namespace aka meta-object)
• in js.controller 4.1 we will also have "fileChange" event handler informing on changes on files (but not the file data, only "is changed" trigger

[theimo1221]

• Clarify the description of e.g. adapter.delFile as now it implies passing null as name is valid, while consumer might need to pass adapter.namespace

adapterName – adapter name. If adapter name is null, default will be the name of the current adapter. path – path to directory without adapter name. E.g. If you want to delete “/vis.0/main/views.json”, here must be “/main/views.json” and _adapter must be equal to “vis.0”.