/// <summary>
/// Finds all the processes based on the search pattern provided and then returns the
/// meta-data associated with them.
/// </summary>
/// <param name="keyQuery">Key query. * is a wildcard</param>
/// <returns>Map of ProcessId to ProcessMetaData</returns>
public Map <ProcessId, ProcessMetaData> QueryProcessMetaData(string keyQuery) =>
Map.createRange(
map(QueryKeys(keyQuery, "", metaDataSuffix).Map(x => (RedisKey)x).ToArray(), keys =>
keys.Map(x => (string)x)
.Map(x => (ProcessId)x.Substring(0, x.Length - metaDataSuffix.Length))
.Zip(Retry(() => Db.StringGet(keys)).Map(x => JsonConvert.DeserializeObject <ProcessMetaData>(x)))));