Remove inaccurate "zero-{copy,allocation}" claims

benchmarks/bench_parser_comparison.cpp

@@ -789,7 +789,7 @@ int main() {
   std::cout << "\nBenchmark completed. The WeaselDB parser is optimized for:\n";
   std::cout << "- Arena-based memory allocation for reduced fragmentation\n";
   std::cout << "- Streaming parsing for network protocols\n";
-  std::cout << "- Zero-copy string handling with string views\n";
+  std::cout << "- String views to minimize unnecessary copying\n";
   std::cout << "- Base64 decoding integrated into parsing pipeline\n";
   std::cout << "- Efficient reset and reuse for high-throughput scenarios\n";
 

design.md

@@ -23,7 +23,7 @@ WeaselDB is a high-performance write-side database component designed for system
 - **High-performance JSON parsing** with streaming support and SIMD optimization
 - **Multi-threaded networking** using multiple epoll instances with unified I/O thread pool
 - **Configurable epoll instances** to eliminate kernel-level contention
-- **Zero-copy design** throughout the pipeline
+- **Optimized memory management** with arena allocation and efficient copying
 - **Factory pattern safety** ensuring correct object lifecycle management
 
 ---
@@ -152,7 +152,7 @@ A high-performance, multi-stage, lock-free pipeline for inter-thread communicati
 - **Arena-backed string storage** with efficient memory management
 - **Move-only semantics** for optimal performance
 - **Builder pattern** for constructing commit requests
-- **Zero-copy string views** pointing to arena-allocated memory
+- **String views** pointing to arena-allocated memory to avoid unnecessary copying
 
 #### **Configuration & Optimization**
 
@@ -242,7 +242,7 @@ The system implements a RESTful API. See [api.md](api.md) for comprehensive API
 1. **Performance-first** - Every component optimized for high throughput
 2. **Scalable concurrency** - Multiple epoll instances eliminate kernel contention
 3. **Memory efficiency** - Arena allocation eliminates fragmentation
-4. **Zero-copy** - Minimize data copying throughout pipeline
+4. **Efficient copying** - Minimize unnecessary copies while accepting required ones
 5. **Streaming-ready** - Support incremental processing
 6. **Type safety** - Compile-time validation where possible
 7. **Resource management** - RAII and move semantics throughout
@@ -437,7 +437,7 @@ public:
 
 #### Arena-Based String Handling
 ```cpp
-// Preferred: Zero-copy string view with arena allocation
+// Preferred: String view with arena allocation to minimize copying
 std::string_view process_json_key(const char* data, ArenaAllocator& arena);
 
 // Avoid: Unnecessary string copies

src/connection.hpp

@@ -70,7 +70,7 @@ struct Connection {
    * asynchronously by the server's I/O threads using efficient vectored
    * I/O.
    *
-   * @param s The data to send (string view for zero-copy efficiency)
+   * @param s The data to send (string view parameter for efficiency)
    * @param copy_to_arena If true (default), copies data to the connection's
    * arena for safe storage. If false, the caller must ensure the data remains
    * valid until all queued messages are sent.

style.md

@@ -99,7 +99,7 @@ auto addr = reinterpret_cast<uintptr_t>(ptr);         // Pointer to integer conv
 - **Complexity must be justified with benchmarks** - measure performance impact before adding complexity
 - **Strive for 0% CPU usage when idle** - avoid polling, busy waiting, or unnecessary background activity
 - Use **inline functions** for performance-critical code (e.g., `allocate_raw`)
-- **Zero-copy operations** with `std::string_view` over string copying
+- **String views** with `std::string_view` to minimize unnecessary copying
 - **Arena allocation** for efficient memory management (~1ns vs ~20-270ns for malloc)
 
 ### Complexity Control
@@ -249,7 +249,7 @@ private:
 - **Parameter passing:**
   - Pass by value for types ≤ 16 bytes (int, pointers, string_view, small structs)
   - Pass by const reference for types > 16 bytes (containers, large objects)
-- **Return by value** for small types (≤ 16 bytes), **string_view** for zero-copy over strings
+- **Return by value** for small types (≤ 16 bytes), **string_view** to avoid copying strings
 - **noexcept specification** for move operations and non-throwing functions
 ```cpp
 std::span<const Operation> operations() const { return operations_; }
@@ -307,7 +307,7 @@ for (auto &precondition : preconditions_) {
 
 ### Ownership & Allocation
 - **Arena allocators** for request-scoped memory with **STL allocator adapters** (see Performance Focus section for characteristics)
-- **String views** pointing to arena-allocated memory for zero-copy operations
+- **String views** pointing to arena-allocated memory to avoid unnecessary copying
 - **STL containers with arena allocators require default construction after arena reset** - `clear()` is not sufficient
 ```cpp
 // STL containers with arena allocators - correct reset pattern

todo.md

@@ -42,7 +42,7 @@
   - [ ] Support for HTTP redirects (3xx responses) with redirect limits
   - [ ] SSL/TLS support using OpenSSL for HTTPS connections
   - [ ] Request/response logging and metrics integration
-  - [ ] Memory-efficient design with zero-copy where possible
+  - [ ] Memory-efficient design minimizing unnecessary copying
 - [ ] Implement fake in-process S3 service using separate Server instance with S3 ConnectionHandler
   - [ ] Use create_local_connection to get fd for in-process communication
   - [ ] Implement `ListObjectsV2` API for object enumeration