How many concurrent connections can SQLite handle?

Does SQLite allow multiple connections?

SQLite does support multiple concurrent connections, and therefore it can be used with a multi-threaded or multi-process application. The catch is that when SQLite opens a write transaction, it will lock all the tables.

Does SQLite have a limit?

SQLite database files have a maximum size of about 140 TB. On a phone, the size of the storage (a few GB) will limit your database file size, while the memory size will limit how much data you can retrieve from a query.

How does SQLite handle concurrency?

SQLite has a lock table that helps locking the database as late as possible during a write operation to ensure maximum concurrency. The initial state is UNLOCKED, and in this state, the connection has not accessed the database yet.

How many requests per second can SQLite handle?

Actually, SQLite will easily do 50,000 or more INSERT statements per second on an average desktop computer. But it will only do a few dozen transactions per second. Transaction speed is limited by the rotational speed of your disk drive.

What is the maximum number of concurrent connections in SQLite?

There is actually no pre-defined limit for number of concurrent connections in sqlite for the same process. This is upto your system's performance. The quotation given by user647772 is about limit of concurrent processes or applications using the same sqlite DB, not valid for concurrent threads in the same process.

Can multiple people write to SQLite at the same time?

SQLite has a readers-writer lock on the database level. Multiple connections (possibly owned by different processes) can read data from the same database at the same time, but only one can write to the database. SQLite supports an unlimited number of simultaneous readers, but it will only allow one writer at any instant in time.

Does SQLite3 handle concurrent access by multiple processes?

Does SQLite3 safely handle concurrent access by multiple processes reading/writing from the same DB? Are there any platform exceptions to that? Show activity on this post. If most of those concurrent accesses are reads (e.g. SELECT), SQLite can handle them very well. But if you start writing concurrently, lock contention could become an issue.

Is concurrency in SQLite a problem?

Concurrency is not a problem, as long as you only read. SQLite doesn't allow concurrency on writes, because it never was designed for that.