# LedisDB configuration

# Server listen address
addr = "127.0.0.1:6380"

# Unix socket permissions, 755 by default.
# Ignored for tcp socket.
addr_unixsocketperm = "0770"

# Server http listen address, set empty to disable
http_addr = "127.0.0.1:11181"

# Data store path, all ledisdb's data will be saved here
data_dir = "/tmp/ledis_server"

# Set the number of databases. You can use `select dbindex` to choose a db.
# dbindex must be in [0, databases - 1].
# Default databases is 16, maximum is 10240 now.
databases = 16

# Log server command, set empty to disable
access_log = ""

# Set slaveof to enable replication from master, empty, no replication
# Any write operations except flushall and replication will be disabled in slave mode.
slaveof = ""

# Readonly mode, slave server is always readonly even readonly = false  
# for readonly mode, only replication and flushall can write
readonly = false

# Choose which backend storage to use, now support:
#
#   leveldb
#   rocksdb
#   goleveldb
#   memory
#   
db_name = "leveldb"

# If not set, use data_dir/"db_name"_data
db_path = ""

# Sync commit to disk if possible
#  0: no sync 
#  1: sync every second 
#  2: sync every commit 
db_sync_commit = 0

# enable replication or not
use_replication = false

# set connection buffer, you can increase them appropriately
# more size, more memory used
conn_read_buffer_size = 10240
conn_write_buffer_size = 10240

# if connection receives no data after n seconds, it may be dead, close 
# 0 to disable and not check 
conn_keepalive_interval = 0

# checking TTL (time to live) data every n seconds
# if you set big, the expired data may not be deleted immediately
ttl_check_interval = 1

[leveldb]
# for leveldb and goleveldb
compression = false
block_size = 32768
write_buffer_size = 67108864
cache_size = 524288000
max_open_files = 1024

[rocksdb]
# rocksdb has many many configurations, 
# we only list little now, but may add more later.
# good luck!

# 0:no, 1:snappy, 2:zlib, 3:bz2, 4:lz4, 5:lz4hc 
compression = 0
block_size = 65536
write_buffer_size = 134217728
cache_size = 1073741824
max_open_files = 1024
max_write_buffer_num = 6
min_write_buffer_number_to_merge = 2
num_levels = 7
level0_file_num_compaction_trigger = 8
level0_slowdown_writes_trigger = 16
level0_stop_writes_trigger = 64
target_file_size_base = 67108864
target_file_size_multiplier = 1
max_bytes_for_level_base = 536870912
max_bytes_for_level_multiplier = 8
disable_auto_compactions = false 
disable_data_sync = false 
use_fsync = false 
background_theads = 16
high_priority_background_threads = 1
max_background_compactions = 15
max_background_flushes = 1
allow_os_buffer = true
enable_statistics = false
stats_dump_period_sec = 3600
# dangerous to set true, write may got lost after a crash
# you can set true if replication opened, we may recover from replication log,
# but it is still not a easy work.
disable_wal = false

[lmdb]
map_size = 524288000
nosync = true

[replication]
# Path to store replication information(write ahead log, commit log, etc.)
# if not set, use data_dir/rpl 
path = ""

# If sync is true, the new log must be sent to some slaves, and then commit. 
# It will reduce performance but have better high availability. 
sync = false

# If sync is true, wait at last wait_sync_time milliseconds for slave syncing this log
wait_sync_time = 500

# If sync is true, wait at most min(wait_max_slave_acks, (n + 1) / 2) to promise syncing ok.
# n is slave number
# If 0, wait (n + 1) / 2 acks.
wait_max_slave_acks = 2

# store name: file, goleveldb
# change in runtime is very dangerous
store_name = "file"

# Expire write ahead logs after the given days
expired_log_days = 7

# for file store, if 0, use default 256MB, max is 1G
max_log_file_size = 0

# for file store, if 0, use default 50
max_log_file_num = 0

# for file store, use mmap for file read and write
use_mmap = true

# Sync log to disk if possible
#  0: no sync 
#  1: sync every second 
#  2: sync every commit 
sync_log = 0

# Compress the log or not
compression = false

[snapshot]
# Path to store snapshot dump file
# if not set, use data_dir/snapshot
# snapshot file name format is dmp-2006-01-02T15:04:05.999999999
path = ""

# Reserve newest max_num snapshot dump files
max_num = 1