PostgreSQL Insert Time Increased 3.6x After Adding an Index
English summary
A PostgreSQL user reports that adding an index caused insert operations to slow down by a factor of 3.6, illustrating the write overhead of database indexes. The finding highlights the trade-off between improved query speed and increased insert cost. No further experimental details are provided.
Chinese summary
一位 PostgreSQL 用户报告，添加索引导致插入操作速度下降了 3.6 倍，体现了数据库索引的写入开销。这一发现突显了查询速度提升与插入成本增加之间的权衡。未提供更多实验细节。
Key points
Insert time increased 3.6x after adding an index in PostgreSQL.
在 PostgreSQL 中添加索引后，插入时间增加了 3.6 倍。
Indexes speed up reads but impose write penalties.
索引能加快读取速度，但会带来写入性能损失。