# PostgreSQL Configuration for Production
# Optimized for 2GB memory allocation

# Connection Settings
listen_addresses = '*'
max_connections = 100
superuser_reserved_connections = 3

# Memory Settings (for 2GB allocation)
shared_buffers = 512MB
effective_cache_size = 1536MB
maintenance_work_mem = 128MB
work_mem = 5MB

# Checkpoint Settings
checkpoint_completion_target = 0.9
wal_buffers = 16MB
default_statistics_target = 100

# Query Planner
random_page_cost = 1.1
effective_io_concurrency = 200

# Write-Ahead Logging
wal_level = replica
max_wal_size = 2GB
min_wal_size = 1GB

# Logging
log_destination = 'stderr'
logging_collector = on
log_directory = 'log'
log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
log_rotation_age = 1d
log_rotation_size = 100MB
log_line_prefix = '%m [%p] %u@%d '
log_timezone = 'Europe/Berlin'

# What to Log
log_min_duration_statement = 1000
log_checkpoints = on
log_connections = on
log_disconnections = on
log_lock_waits = on
log_statement = 'ddl'

# Autovacuum
autovacuum = on
autovacuum_max_workers = 3
autovacuum_naptime = 1min

# Client Connection Defaults
datestyle = 'iso, mdy'
timezone = 'Europe/Berlin'
lc_messages = 'en_US.utf8'
lc_monetary = 'en_US.utf8'
lc_numeric = 'en_US.utf8'
lc_time = 'en_US.utf8'
default_text_search_config = 'pg_catalog.english'

# Lock Management
deadlock_timeout = 1s

# Statement Timeout (prevent long-running queries)
statement_timeout = 30000  # 30 seconds

# Parallel Query Execution
max_parallel_workers_per_gather = 2
max_parallel_workers = 4
max_worker_processes = 4