PlaceHolderKV documentation

Clients

All clients are listed under language specific sub-folders of clients

The path follows the pattern: clients/{language}/github.com/{owner}/{repository}.json. The {language} component of the path is the path-safe representation of the full language name which is mapped in languages.json.

Each client's JSON object represents the details displayed on the clients documentation page.

For example clients/python/github.com/placeholderkv:

{
    "name": "placeholderkv-py",
    "description": "Mature and supported. Currently the way to go for Python.",
    "recommended": true
}

Commands

PlaceHolderKV commands are described in the commands.json file that is auto generated from the PlaceHolderKV repo based on the JSON files in the commands folder. See: https://github.com/placeholderkv/placeholderkv/tree/unstable/src/commands See: https://github.com/placeholderkv/placeholderkv/placeholderkv/unstable/utils/generate-commands-json.py

For each command there's a Markdown file with a complete, human-readable description. We process this Markdown to provide a better experience, so some things to take into account:

• Inside text, all commands should be written in all caps, in between backticks. For example: INCR.

• You can use some magic keywords to name common elements in PlaceHolderKV. For example: @multi-bulk-reply. These keywords will get expanded and auto-linked to relevant parts of the documentation.

Each command will have a description and both RESP2 and RESP3 return values. Regarding the return values, these are contained in the files:

• resp2_replies.json
• resp3_replies.json

Each file is a dictionary with a matching set of keys. Each key is an array of strings that, when processed, produce Markdown content. Here's an example:

{
  ...
  "ACL CAT": [
    "One of the following:",
    "* [Array reply](/docs/reference/protocol-spec#arrays): an array of [Bulk string reply](/docs/reference/protocol-spec#bulk-strings) elements representing ACL categories or commands in a given category.",
    "* [Simple error reply](/docs/reference/protocol-spec#simple-errors): the command returns an error if an invalid category name is given."
  ],
  ...
}

Important: when adding or editing return values, be sure to edit both files. Use the following links for the reply type. Note: do not use @reply-type specifiers; use only the Markdown link.

@simple-string-reply: [Simple string reply](https://placeholderkv.io/docs/reference/protocol-spec#simple-strings)
@simple-error-reply: [Simple error reply](https://placeholderkv.io/docs/reference/protocol-spec#simple-errors)
@integer-reply: [Integer reply](https://placeholderkv.io/docs/reference/protocol-spec#integers)
@bulk-string-reply: [Bulk string reply](https://placeholderkv.io/docs/reference/protocol-spec#bulk-strings)
@array-reply: [Array reply](https://placeholderkv.io/docs/reference/protocol-spec#arrays)
@nil-reply: [Nil reply](https://placeholderkv.io/docs/reference/protocol-spec#bulk-strings)
@null-reply: [Null reply](https://placeholderkv.io/docs/reference/protocol-spec#nulls)
@boolean-reply: [Boolean reply](https://placeholderkv.io/docs/reference/protocol-spec#booleans)
@double-reply: [Double reply](https://placeholderkv.io/docs/reference/protocol-spec#doubles)
@big-number-reply: [Big number reply](https://placeholderkv.io/docs/reference/protocol-spec#big-numbers)
@bulk-error-reply: [Bulk error reply](https://placeholderkv.io/docs/reference/protocol-spec#bulk-errors)
@verbatim-string-reply: [Verbatim string reply](https://placeholderkv.io/docs/reference/protocol-spec#verbatim-strings)
@map-reply: [Map reply](https://placeholderkv.io/docs/reference/protocol-spec#maps)
@set-reply: [Set reply](https://placeholderkv.io/docs/reference/protocol-spec#sets)
@push-reply: [Push reply](https://placeholderkv.io/docs/reference/protocol-spec#pushes)

Styling guidelines

Please use the following formatting rules (aiming for smaller diffs that are easier to review):

• No need for manual lines wrapping at any specific length, doing so usually means that adding a word creates a cascade effect and changes other lines.
• Please avoid writing lines that are too long, this makes the diff harder to review when only one word is changed.
• Start every sentence on a new line.

Checking your work

After making changes to the documentation, you can use the spellchecker-cli package to validate your spelling as well as some minor grammatical errors. You can install the spellchecker locally by running:

npm install --global spellchecker-cli

You can than validate your spelling by running the following

spellchecker --no-suggestions -f '**/*.md' -l en-US -q -d wordlist

Any exceptions you need for spelling can be added to the wordlist file.