Databend Common

• base contains runtime, pool, allocator and rangemap.
• building sets up the environment for building components and internal use.
• cache contains cache traits designed for memory and disk, and provides a basic LRU implementation.
• exception, error handling and backtracking.
• grpc wraps some of the utility code snippets for grpc.
• hashtable, a linear probe hashtable, mainly used in scenarios such as group by aggregation functions and join.
• http is a common http handler that includes health check, cpu/memory profile and graceful shutdown.
• io focus on binary serialisation and deserialisation.
• metrics takes over the initialization of the PrometheusRecorder and owns the PrometheusHandle.
• storage provides storage related types and functions.
• tracing handles logging and tracing.