# ====================================================
# PostgreSQL 配置文件（针对开发环境优化）
# ====================================================

# 连接设置
# ====================================================
listen_addresses = '*'
max_connections = 200
superuser_reserved_connections = 3

# 内存设置
# ====================================================
shared_buffers = 256MB              # 共享缓冲区（推荐系统内存的 25%）
effective_cache_size = 1GB          # 有效缓存大小（推荐系统内存的 50-75%）
maintenance_work_mem = 128MB        # 维护操作内存
work_mem = 5MB                      # 排序和哈希表内存

# WAL（Write-Ahead Logging）设置
# ====================================================
wal_buffers = 16MB
min_wal_size = 1GB
max_wal_size = 4GB
checkpoint_completion_target = 0.9

# 查询优化
# ====================================================
random_page_cost = 1.1              # SSD 优化（默认 4.0）
effective_io_concurrency = 200      # SSD 优化（默认 1）
default_statistics_target = 100

# 日志设置
# ====================================================
logging_collector = on
log_destination = 'stderr'
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 = 'Asia/Shanghai'

# 慢查询日志
log_min_duration_statement = 1000   # 记录超过 1 秒的查询
log_statement = 'ddl'               # 记录 DDL 语句

# 扩展配置
# ====================================================
shared_preload_libraries = 'vector' # 预加载 pgvector 扩展

# JIT 编译（提升性能）
# ====================================================
jit = on
jit_above_cost = 100000
jit_inline_above_cost = 500000
jit_optimize_above_cost = 500000

# 时区设置
# ====================================================
timezone = 'Asia/Shanghai'

# 客户端连接默认设置
# ====================================================
client_encoding = 'UTF8'
lc_messages = 'C'
lc_monetary = 'C'
lc_numeric = 'C'
lc_time = 'C'

# 并行查询设置（提升大数据量查询性能）
# ====================================================
max_parallel_workers_per_gather = 2
max_parallel_workers = 4
max_worker_processes = 4

# 自动清理设置
# ====================================================
autovacuum = on
autovacuum_max_workers = 3
autovacuum_naptime = 1min