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"""Prometheus metrics for monitoring."""
from prometheus_client import Counter, Gauge, Histogram, Summary
# Request metrics
request_count = Counter(
"writing_studio_requests_total",
"Total number of analysis requests",
["status"],
)
request_duration = Histogram(
"writing_studio_request_duration_seconds",
"Request duration in seconds",
["operation"],
)
# Model metrics
model_load_duration = Histogram(
"writing_studio_model_load_duration_seconds",
"Model loading duration in seconds",
)
generation_duration = Summary(
"writing_studio_generation_duration_seconds",
"Text generation duration in seconds",
)
# Cache metrics
cache_hits = Counter(
"writing_studio_cache_hits_total",
"Total number of cache hits",
)
cache_misses = Counter(
"writing_studio_cache_misses_total",
"Total number of cache misses",
)
cache_size = Gauge(
"writing_studio_cache_size",
"Current cache size",
)
# Error metrics
error_count = Counter(
"writing_studio_errors_total",
"Total number of errors",
["error_type"],
)
# System metrics
active_requests = Gauge(
"writing_studio_active_requests",
"Number of active requests",
)
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