Description of MongoDB configuration options

Configuration option = Default value	Description
[drivers:storage:mongodb]
database = zaqar	(StrOpt) Database name.
max_attempts = 1000	(IntOpt) Maximum number of times to retry a failed operation. Currently only used for retrying a message post.
max_reconnect_attempts = 10	(IntOpt) Maximum number of times to retry an operation that failed due to a primary node failover.
max_retry_jitter = 0.005	(FloatOpt) Maximum jitter interval, to be added to the sleep interval, in order to decrease probability that parallel requests will retry at the same instant.
max_retry_sleep = 0.1	(FloatOpt) Maximum sleep interval between retries (actual sleep time increases linearly according to number of attempts performed).
partitions = 2	(IntOpt) Number of databases across which to partition message data, in order to reduce writer lock %. DO NOT change this setting after initial deployment. It MUST remain static. Also, you should not need a large number of partitions to improve performance, esp. if deploying MongoDB on SSD storage.
reconnect_sleep = 0.02	(FloatOpt) Base sleep interval between attempts to reconnect after a primary node failover. The actual sleep time increases exponentially (power of 2) each time the operation is retried.
ssl_ca_certs = None	(StrOpt) The ca_certs file contains a set of concatenated "certification authority" certificates, which are used to validate certificates passed from the other end of the connection.
ssl_cert_reqs = CERT_REQUIRED	(StrOpt) Specifies whether a certificate is required from the other side of the connection, and whether it will be validated if provided. It must be one of the three values ``CERT_NONE``(certificates ignored), ``CERT_OPTIONAL``(not required, but validated if provided), or ``CERT_REQUIRED``(required and validated). If the value of this parameter is not ``CERT_NONE``, then the ``ssl_ca_cert`` parameter must point to a file of CA certificates.
ssl_certfile = None	(StrOpt) The certificate file used to identify the local connection against mongod.
ssl_keyfile = None	(StrOpt) The private keyfile used to identify the local connection against mongod. If included with the ``certifle`` then only the ``ssl_certfile`` is needed.
uri = None	(StrOpt) Mongodb Connection URI. If ssl connection enabled, then ``ssl_keyfile``, ``ssl_certfile``, ``ssl_cert_reqs``, ``ssl_ca_certs`` need to be set accordingly.