Session Management: Why I Stopped Restarting Claude Code

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Session Management: Why I Stopped Restarting Claude Code

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I injected a test marker into my auto-memory file mid-session. Next turn, Claude had no idea the file changed. That experiment changed everything about how I manage Claude Code sessions.Most developers restart Claude Code when context hits 80%. Feels productive. Costs $0.67 per restart in invisible cache rebuilds. Do that 10 times a day and you are burning $6.70 before writing a single line of code.In this episode:- The marker injection experiment that revealed how CLAUDE.md actually loads- What is in the cached prefix and what changes every turn- The real cost of session restarts vs. compaction (with actual numbers)- How the "prompt infusion" pattern works - system-reminder tags inject dynamic data without touching the cache- Why the first 3-5 turns of every new session are always the worst- The warm cache loop strategy that keeps your prefix alive between tasks- How handoff documents create session continuity without manual context loading- When restarting actually makes sense (and when it is pure waste)Key insight: Claude Code has two distinct layers in every session. The prefix (system prompt, tools, CLAUDE.md, rules) is frozen at session start and cached. The conversation layer (messages, tool results, hooks) changes every turn but never touches the prefix. Understanding this boundary is the difference between efficient sessions and expensive ones.Practical takeaway: use compaction instead of /clear, write handoff documents before closing sessions, and plan your tool set upfront. The warm cache strategy from this episode saves more money than any model switching optimization.Builds on Episode 1 (Prompt Caching) and leads into Episode 3 (Session Memory Plugin) which automates the handoff workflow.---Read the full article: https://primeline.cc/blog/session-managementClaude Code Deep Dives is an AI-powered podcast by PrimeLine, generated with NotebookLM from in-depth technical articles. Each episode explores real production Claude Code setups.Website: primeline.ccX: @PrimeLineAI

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